User avatar
heatfanjohn
Posts: 28
Joined: Fri Jun 28, 2013 5:18 pm
Location: Davie, FL

Camera hangs using -ex verylong

Mon Oct 07, 2013 4:04 am

My camera hung today while using running:

Code: Select all

raspistill --exif 'Artist=John' -ex verylong -t 1000 -w 1296 -h 972 -q 10 -n -o ~/pic18.jpg
I am running a 'debug' version of userland that I cloned and built on 10/1/2013.

Here are the stack traces of raspistill captured using gdb:

Code: Select all

[email protected] ~ $ gdb
GNU gdb (GDB) 7.4.1-debian
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabihf".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
(gdb) attach 22719
Attaching to process 22719
Reading symbols from /opt/vc/bin/raspistill...done.
Reading symbols from /usr/lib/arm-linux-gnueabihf/libcofi_rpi.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/arm-linux-gnueabihf/libcofi_rpi.so
Reading symbols from /opt/vc/lib/libmmal_core.so...done.
Loaded symbols for /opt/vc/lib/libmmal_core.so
Reading symbols from /opt/vc/lib/libmmal_util.so...done.
Loaded symbols for /opt/vc/lib/libmmal_util.so
Reading symbols from /opt/vc/lib/libmmal_vc_client.so...done.
Loaded symbols for /opt/vc/lib/libmmal_vc_client.so
Reading symbols from /opt/vc/lib/libvcos.so...done.
Loaded symbols for /opt/vc/lib/libvcos.so
Reading symbols from /opt/vc/lib/libbcm_host.so...done.
Loaded symbols for /opt/vc/lib/libbcm_host.so
Reading symbols from /lib/arm-linux-gnueabihf/libpthread.so.0...Reading symbols from /usr/lib/debug/lib/arm-linux-gnueabihf/libpthread-2.13.so...done.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
[New Thread 0xb3d53470 (LWP 22726)]
[New Thread 0xb4553470 (LWP 22725)]
[New Thread 0xb4d53470 (LWP 22724)]
[New Thread 0xb5553470 (LWP 22723)]
[New Thread 0xb5d53470 (LWP 22722)]
[New Thread 0xb6553470 (LWP 22721)]
[New Thread 0xb6d53470 (LWP 22720)]
done.
Loaded symbols for /lib/arm-linux-gnueabihf/libpthread.so.0
Reading symbols from /lib/arm-linux-gnueabihf/libdl.so.2...Reading symbols from /usr/lib/debug/lib/arm-linux-gnueabihf/libdl-2.13.so...done.
done.
Loaded symbols for /lib/arm-linux-gnueabihf/libdl.so.2
Reading symbols from /lib/arm-linux-gnueabihf/librt.so.1...Reading symbols from /usr/lib/debug/lib/arm-linux-gnueabihf/librt-2.13.so...done.
done.
Loaded symbols for /lib/arm-linux-gnueabihf/librt.so.1
Reading symbols from /opt/vc/lib/libvchiq_arm.so...done.
Loaded symbols for /opt/vc/lib/libvchiq_arm.so
Reading symbols from /lib/arm-linux-gnueabihf/libgcc_s.so.1...Reading symbols from /usr/lib/debug/lib/arm-linux-gnueabihf/libgcc_s.so.1...done.
done.
Loaded symbols for /lib/arm-linux-gnueabihf/libgcc_s.so.1
Reading symbols from /lib/arm-linux-gnueabihf/libc.so.6...Reading symbols from /usr/lib/debug/lib/arm-linux-gnueabihf/libc-2.13.so...done.
done.
Loaded symbols for /lib/arm-linux-gnueabihf/libc.so.6
Reading symbols from /lib/ld-linux-armhf.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/ld-linux-armhf.so.3
0xb6ee1700 in __new_sem_wait (sem=0xb6f3c3bc) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
60      ../nptl/sysdeps/unix/sysv/linux/sem_wait.c: No such file or directory.
(gdb) bt
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f3c3bc) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
#1  0xb6f29dd0 in vcos_semaphore_wait (sem=0xb6f3c3bc)
    at /home/johnma/code/userland/build/inc/interface/vcos/vcos_platform.h:257
#2  0xb6f2c0fc in mmal_vc_sendwait_message (client=0xb6f3c398, msg_header=0xbef8f32c, size=28, msgid=7, dest=0xbef8f348,
    destlen=0xbef8f328, send_dummy_bulk=0) at /home/johnma/code/userland/interface/mmal/vc/mmal_vc_client.c:592
#3  0xb6f2f4d8 in mmal_vc_component_disable (component=0x1f18370)
    at /home/johnma/code/userland/interface/mmal/vc/mmal_vc_api.c:702
#4  0xb6f63f54 in mmal_component_disable (component=0x1f18370)
    at /home/johnma/code/userland/interface/mmal/core/mmal_component.c:419
#5  0x000103e8 in main (argc=16, argv=0xbef8f714)
    at /home/johnma/code/userland/host_applications/linux/apps/raspicam/RaspiStill.c:1496
(gdb) threads
Undefined command: "threads".  Try "help".
(gdb) info threads
  Id   Target Id         Frame
  8    Thread 0xb6d53470 (LWP 22720) "VCHIQ completio" 0xb6e16dfc in ioctl () at ../sysdeps/unix/syscall-template.S:82
  7    Thread 0xb6553470 (LWP 22721) "HDispmanx Notif" 0xb6ee1700 in __new_sem_wait (sem=0xb6f1092c)
    at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
  6    Thread 0xb5d53470 (LWP 22722) "HTV Notify" 0xb6ee1700 in __new_sem_wait (sem=0xb6f0ed64)
    at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
  5    Thread 0xb5553470 (LWP 22723) "HCEC Notify" 0xb6ee1700 in __new_sem_wait (sem=0xb6f0fb04)
    at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
  4    Thread 0xb4d53470 (LWP 22724) "vc.ril.camera" 0xb6ee1700 in __new_sem_wait (sem=0x1f184a0)
    at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
  3    Thread 0xb4553470 (LWP 22725) "vc.null_sink" 0xb6ee1700 in __new_sem_wait (sem=0x1f235d0)
    at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
  2    Thread 0xb3d53470 (LWP 22726) "vc.ril.image_en" 0xb6ee1700 in __new_sem_wait (sem=0x1f24c70)
    at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
* 1    Thread 0xb6fac000 (LWP 22719) "raspistill" 0xb6ee1700 in __new_sem_wait (sem=0xb6f3c3bc)
    at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
(gdb) thread 8
[Switching to thread 8 (Thread 0xb6d53470 (LWP 22720))]
#0  0xb6e16dfc in ioctl () at ../sysdeps/unix/syscall-template.S:82
82      ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0  0xb6e16dfc in ioctl () at ../sysdeps/unix/syscall-template.S:82
#1  0xb6eaf720 in completion_thread (arg=0xb6eb9218) at /home/johnma/code/userland/interface/vchiq_arm/vchiq_lib.c:1475
#2  0xb6f14324 in vcos_thread_entry (arg=0xb6eb9228) at /home/johnma/code/userland/interface/vcos/pthreads/vcos_pthreads.c:117
#3  0xb6edabfc in start_thread (arg=0xb6d53470) at pthread_create.c:306
#4  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
#5  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) thread 7
[Switching to thread 7 (Thread 0xb6553470 (LWP 22721))]
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f1092c) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
60      ../nptl/sysdeps/unix/sysv/linux/sem_wait.c: No such file or directory.
(gdb) bt
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f1092c) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
#1  0xb6f0179c in vcos_event_wait (event=0xb6f10914)
    at /home/johnma/code/userland/build/inc/interface/vcos/vcos_platform.h:550
#2  0xb6f02fec in dispmanx_notify_func (arg=0x0) at /home/johnma/code/userland/interface/vmcs_host/vc_vchi_dispmanx.c:1181
#3  0xb6f14324 in vcos_thread_entry (arg=0xb6f10940) at /home/johnma/code/userland/interface/vcos/pthreads/vcos_pthreads.c:117
#4  0xb6edabfc in start_thread (arg=0xb6553470) at pthread_create.c:306
#5  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
#6  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) thread 6
[Switching to thread 6 (Thread 0xb5d53470 (LWP 22722))]
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f0ed64) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
60      in ../nptl/sysdeps/unix/sysv/linux/sem_wait.c
(gdb) bt
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f0ed64) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
#1  0xb6efb3f8 in vcos_event_wait (event=0xb6f0ed4c)
    at /home/johnma/code/userland/build/inc/interface/vcos/vcos_platform.h:550
#2  0xb6efc668 in tvservice_notify_func (arg=0xb6f0e070)
    at /home/johnma/code/userland/interface/vmcs_host/vc_vchi_tvservice.c:654
#3  0xb6f14324 in vcos_thread_entry (arg=0xb6f0ed78) at /home/johnma/code/userland/interface/vcos/pthreads/vcos_pthreads.c:117
#4  0xb6edabfc in start_thread (arg=0xb5d53470) at pthread_create.c:306
#5  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
#6  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) thread 5
[Switching to thread 5 (Thread 0xb5553470 (LWP 22723))]
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f0fb04) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
60      in ../nptl/sysdeps/unix/sysv/linux/sem_wait.c
(gdb) bt
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f0fb04) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
#1  0xb6efee08 in vcos_event_wait (event=0xb6f0faec)
    at /home/johnma/code/userland/build/inc/interface/vcos/vcos_platform.h:550
#2  0xb6effdd8 in cecservice_notify_func (arg=0xb6f0ee60)
    at /home/johnma/code/userland/interface/vmcs_host/vc_vchi_cecservice.c:553
#3  0xb6f14324 in vcos_thread_entry (arg=0xb6f0fb18) at /home/johnma/code/userland/interface/vcos/pthreads/vcos_pthreads.c:117
#4  0xb6edabfc in start_thread (arg=0xb5553470) at pthread_create.c:306
#5  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
#6  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) thread 4
[Switching to thread 4 (Thread 0xb4d53470 (LWP 22724))]
#0  0xb6ee1700 in __new_sem_wait (sem=0x1f184a0) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
60      in ../nptl/sysdeps/unix/sysv/linux/sem_wait.c
(gdb) bt
#0  0xb6ee1700 in __new_sem_wait (sem=0x1f184a0) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
#1  0xb6f6271c in vcos_semaphore_wait (sem=0x1f184a0)
    at /home/johnma/code/userland/build/inc/interface/vcos/vcos_platform.h:257
#2  0xb6f64544 in mmal_component_action_thread_func (arg=0x1f18370)
    at /home/johnma/code/userland/interface/mmal/core/mmal_component.c:537
#3  0xb6f14324 in vcos_thread_entry (arg=0x1f183d0) at /home/johnma/code/userland/interface/vcos/pthreads/vcos_pthreads.c:117
#4  0xb6edabfc in start_thread (arg=0xb4d53470) at pthread_create.c:306
#5  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
#6  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) thread 3
[Switching to thread 3 (Thread 0xb4553470 (LWP 22725))]
#0  0xb6ee1700 in __new_sem_wait (sem=0x1f235d0) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
60      in ../nptl/sysdeps/unix/sysv/linux/sem_wait.c
(gdb) bt
#0  0xb6ee1700 in __new_sem_wait (sem=0x1f235d0) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
#1  0xb6f6271c in vcos_semaphore_wait (sem=0x1f235d0)
    at /home/johnma/code/userland/build/inc/interface/vcos/vcos_platform.h:257
#2  0xb6f64544 in mmal_component_action_thread_func (arg=0x1f234a0)
    at /home/johnma/code/userland/interface/mmal/core/mmal_component.c:537
#3  0xb6f14324 in vcos_thread_entry (arg=0x1f23500) at /home/johnma/code/userland/interface/vcos/pthreads/vcos_pthreads.c:117
#4  0xb6edabfc in start_thread (arg=0xb4553470) at pthread_create.c:306
#5  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
#6  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) thread 2
[Switching to thread 2 (Thread 0xb3d53470 (LWP 22726))]
#0  0xb6ee1700 in __new_sem_wait (sem=0x1f24c70) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
60      in ../nptl/sysdeps/unix/sysv/linux/sem_wait.c
(gdb) bt
#0  0xb6ee1700 in __new_sem_wait (sem=0x1f24c70) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
#1  0xb6f6271c in vcos_semaphore_wait (sem=0x1f24c70)
    at /home/johnma/code/userland/build/inc/interface/vcos/vcos_platform.h:257
#2  0xb6f64544 in mmal_component_action_thread_func (arg=0x1f24b40)
    at /home/johnma/code/userland/interface/mmal/core/mmal_component.c:537
#3  0xb6f14324 in vcos_thread_entry (arg=0x1f24ba0) at /home/johnma/code/userland/interface/vcos/pthreads/vcos_pthreads.c:117
#4  0xb6edabfc in start_thread (arg=0xb3d53470) at pthread_create.c:306
#5  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
#6  0xb6e1e758 in ?? () at ../ports/sysdeps/unix/sysv/linux/arm/nptl/../clone.S:116 from /lib/arm-linux-gnueabihf/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) thread 1
[Switching to thread 1 (Thread 0xb6fac000 (LWP 22719))]
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f3c3bc) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
60      in ../nptl/sysdeps/unix/sysv/linux/sem_wait.c
(gdb) bt
#0  0xb6ee1700 in __new_sem_wait (sem=0xb6f3c3bc) at ../nptl/sysdeps/unix/sysv/linux/sem_wait.c:60
#1  0xb6f29dd0 in vcos_semaphore_wait (sem=0xb6f3c3bc)
    at /home/johnma/code/userland/build/inc/interface/vcos/vcos_platform.h:257
#2  0xb6f2c0fc in mmal_vc_sendwait_message (client=0xb6f3c398, msg_header=0xbef8f32c, size=28, msgid=7, dest=0xbef8f348,
    destlen=0xbef8f328, send_dummy_bulk=0) at /home/johnma/code/userland/interface/mmal/vc/mmal_vc_client.c:592
#3  0xb6f2f4d8 in mmal_vc_component_disable (component=0x1f18370)
    at /home/johnma/code/userland/interface/mmal/vc/mmal_vc_api.c:702
#4  0xb6f63f54 in mmal_component_disable (component=0x1f18370)
    at /home/johnma/code/userland/interface/mmal/core/mmal_component.c:419
#5  0x000103e8 in main (argc=16, argv=0xbef8f714)
    at /home/johnma/code/userland/host_applications/linux/apps/raspicam/RaspiStill.c:1496
I also see these messages being logged by the kernel in /var/log/kern.log:

Code: Select all

Oct  6 22:37:09 raspberrypi kernel: [355217.626365] INFO: task kworker/0:1:22597 blocked for more than 120 seconds.
Oct  6 22:37:09 raspberrypi kernel: [355217.626388] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:37:09 raspberrypi kernel: [355217.626401] kworker/0:1     D c03a023c     0 22597      2 0x00000000
Oct  6 22:37:09 raspberrypi kernel: [355217.626475] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34)
Oct  6 22:37:09 raspberrypi kernel: [355217.626506] [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34) from [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c)
Oct  6 22:37:09 raspberrypi kernel: [355217.626534] [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c) from [<c001a838>] (bcm_mailbox_property+0x30/0x15c)
Oct  6 22:37:09 raspberrypi kernel: [355217.626563] [<c001a838>] (bcm_mailbox_property+0x30/0x15c) from [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8)
Oct  6 22:37:09 raspberrypi kernel: [355217.626590] [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8) from [<c02b708c>] (thermal_zone_device_update+0x2c/0x240)
Oct  6 22:37:09 raspberrypi kernel: [355217.626621] [<c02b708c>] (thermal_zone_device_update+0x2c/0x240) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:37:09 raspberrypi kernel: [355217.626647] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:37:09 raspberrypi kernel: [355217.626679] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:37:09 raspberrypi kernel: [355217.626719] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:37:09 raspberrypi kernel: [355217.626739] INFO: task kworker/0:2:22693 blocked for more than 120 seconds.
Oct  6 22:37:09 raspberrypi kernel: [355217.626747] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:37:09 raspberrypi kernel: [355217.626756] kworker/0:2     D c03a023c     0 22693      2 0x00000000
Oct  6 22:37:09 raspberrypi kernel: [355217.626793] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c039ef90>] (schedule_timeout+0x158/0x1e0)
Oct  6 22:37:09 raspberrypi kernel: [355217.626819] [<c039ef90>] (schedule_timeout+0x158/0x1e0) from [<c039fc80>] (__down+0x88/0xc0)
Oct  6 22:37:09 raspberrypi kernel: [355217.626854] [<c039fc80>] (__down+0x88/0xc0) from [<c0040318>] (down+0x60/0x64)
Oct  6 22:37:09 raspberrypi kernel: [355217.626879] [<c0040318>] (down+0x60/0x64) from [<c001a7d0>] (bcm_mailbox_read+0x60/0x98)
Oct  6 22:37:09 raspberrypi kernel: [355217.626902] [<c001a7d0>] (bcm_mailbox_read+0x60/0x98) from [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c)
Oct  6 22:37:09 raspberrypi kernel: [355217.626935] [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c) from [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114)
Oct  6 22:37:09 raspberrypi kernel: [355217.626962] [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114) from [<c02b818c>] (__cpufreq_driver_target+0x38/0x54)
Oct  6 22:37:09 raspberrypi kernel: [355217.626988] [<c02b818c>] (__cpufreq_driver_target+0x38/0x54) from [<c02ba934>] (do_dbs_timer+0x1c4/0x394)
Oct  6 22:37:09 raspberrypi kernel: [355217.627012] [<c02ba934>] (do_dbs_timer+0x1c4/0x394) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:37:09 raspberrypi kernel: [355217.627035] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:37:09 raspberrypi kernel: [355217.627062] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:37:09 raspberrypi kernel: [355217.627091] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:39:09 raspberrypi kernel: [355337.631960] INFO: task kworker/0:1:22597 blocked for more than 120 seconds.
Oct  6 22:39:09 raspberrypi kernel: [355337.631983] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:39:09 raspberrypi kernel: [355337.631996] kworker/0:1     D c03a023c     0 22597      2 0x00000000
Oct  6 22:39:09 raspberrypi kernel: [355337.632072] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34)
Oct  6 22:39:09 raspberrypi kernel: [355337.632103] [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34) from [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c)
Oct  6 22:39:09 raspberrypi kernel: [355337.632132] [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c) from [<c001a838>] (bcm_mailbox_property+0x30/0x15c)
Oct  6 22:39:09 raspberrypi kernel: [355337.632164] [<c001a838>] (bcm_mailbox_property+0x30/0x15c) from [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8)
Oct  6 22:39:09 raspberrypi kernel: [355337.632191] [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8) from [<c02b708c>] (thermal_zone_device_update+0x2c/0x240)
Oct  6 22:39:09 raspberrypi kernel: [355337.632219] [<c02b708c>] (thermal_zone_device_update+0x2c/0x240) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:39:09 raspberrypi kernel: [355337.632246] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:39:09 raspberrypi kernel: [355337.632281] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:39:09 raspberrypi kernel: [355337.632320] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:39:09 raspberrypi kernel: [355337.632339] INFO: task kworker/0:2:22693 blocked for more than 120 seconds.
Oct  6 22:39:09 raspberrypi kernel: [355337.632348] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:39:09 raspberrypi kernel: [355337.632357] kworker/0:2     D c03a023c     0 22693      2 0x00000000
Oct  6 22:39:09 raspberrypi kernel: [355337.632393] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c039ef90>] (schedule_timeout+0x158/0x1e0)
Oct  6 22:39:09 raspberrypi kernel: [355337.632420] [<c039ef90>] (schedule_timeout+0x158/0x1e0) from [<c039fc80>] (__down+0x88/0xc0)
Oct  6 22:39:09 raspberrypi kernel: [355337.632456] [<c039fc80>] (__down+0x88/0xc0) from [<c0040318>] (down+0x60/0x64)
Oct  6 22:39:09 raspberrypi kernel: [355337.632481] [<c0040318>] (down+0x60/0x64) from [<c001a7d0>] (bcm_mailbox_read+0x60/0x98)
Oct  6 22:39:09 raspberrypi kernel: [355337.632503] [<c001a7d0>] (bcm_mailbox_read+0x60/0x98) from [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c)
Oct  6 22:39:09 raspberrypi kernel: [355337.632537] [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c) from [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114)
Oct  6 22:39:09 raspberrypi kernel: [355337.632564] [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114) from [<c02b818c>] (__cpufreq_driver_target+0x38/0x54)
Oct  6 22:39:09 raspberrypi kernel: [355337.632589] [<c02b818c>] (__cpufreq_driver_target+0x38/0x54) from [<c02ba934>] (do_dbs_timer+0x1c4/0x394)
Oct  6 22:39:09 raspberrypi kernel: [355337.632614] [<c02ba934>] (do_dbs_timer+0x1c4/0x394) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:39:09 raspberrypi kernel: [355337.632637] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:39:09 raspberrypi kernel: [355337.632666] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:39:09 raspberrypi kernel: [355337.632696] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:41:09 raspberrypi kernel: [355457.637481] INFO: task kworker/0:1:22597 blocked for more than 120 seconds.
Oct  6 22:41:09 raspberrypi kernel: [355457.637506] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:41:09 raspberrypi kernel: [355457.637518] kworker/0:1     D c03a023c     0 22597      2 0x00000000
Oct  6 22:41:09 raspberrypi kernel: [355457.637593] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34)
Oct  6 22:41:09 raspberrypi kernel: [355457.637625] [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34) from [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c)
Oct  6 22:41:09 raspberrypi kernel: [355457.637653] [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c) from [<c001a838>] (bcm_mailbox_property+0x30/0x15c)
Oct  6 22:41:09 raspberrypi kernel: [355457.637683] [<c001a838>] (bcm_mailbox_property+0x30/0x15c) from [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8)
Oct  6 22:41:09 raspberrypi kernel: [355457.637711] [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8) from [<c02b708c>] (thermal_zone_device_update+0x2c/0x240)
Oct  6 22:41:09 raspberrypi kernel: [355457.637744] [<c02b708c>] (thermal_zone_device_update+0x2c/0x240) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:41:09 raspberrypi kernel: [355457.637768] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:41:09 raspberrypi kernel: [355457.637801] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:41:09 raspberrypi kernel: [355457.637841] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:41:09 raspberrypi kernel: [355457.637859] INFO: task kworker/0:2:22693 blocked for more than 120 seconds.
Oct  6 22:41:09 raspberrypi kernel: [355457.637867] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:41:09 raspberrypi kernel: [355457.637875] kworker/0:2     D c03a023c     0 22693      2 0x00000000
Oct  6 22:41:09 raspberrypi kernel: [355457.637913] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c039ef90>] (schedule_timeout+0x158/0x1e0)
Oct  6 22:41:09 raspberrypi kernel: [355457.637938] [<c039ef90>] (schedule_timeout+0x158/0x1e0) from [<c039fc80>] (__down+0x88/0xc0)
Oct  6 22:41:09 raspberrypi kernel: [355457.637974] [<c039fc80>] (__down+0x88/0xc0) from [<c0040318>] (down+0x60/0x64)
Oct  6 22:41:09 raspberrypi kernel: [355457.637998] [<c0040318>] (down+0x60/0x64) from [<c001a7d0>] (bcm_mailbox_read+0x60/0x98)
Oct  6 22:41:09 raspberrypi kernel: [355457.638020] [<c001a7d0>] (bcm_mailbox_read+0x60/0x98) from [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c)
Oct  6 22:41:09 raspberrypi kernel: [355457.638053] [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c) from [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114)
Oct  6 22:41:09 raspberrypi kernel: [355457.638081] [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114) from [<c02b818c>] (__cpufreq_driver_target+0x38/0x54)
Oct  6 22:41:09 raspberrypi kernel: [355457.638105] [<c02b818c>] (__cpufreq_driver_target+0x38/0x54) from [<c02ba934>] (do_dbs_timer+0x1c4/0x394)
Oct  6 22:41:09 raspberrypi kernel: [355457.638129] [<c02ba934>] (do_dbs_timer+0x1c4/0x394) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:41:09 raspberrypi kernel: [355457.638152] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:41:09 raspberrypi kernel: [355457.638178] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:41:09 raspberrypi kernel: [355457.638208] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:43:09 raspberrypi kernel: [355577.643051] INFO: task kworker/0:1:22597 blocked for more than 120 seconds.
Oct  6 22:43:09 raspberrypi kernel: [355577.643074] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:43:09 raspberrypi kernel: [355577.643087] kworker/0:1     D c03a023c     0 22597      2 0x00000000
Oct  6 22:43:09 raspberrypi kernel: [355577.643163] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34)
Oct  6 22:43:09 raspberrypi kernel: [355577.643196] [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34) from [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c)
Oct  6 22:43:09 raspberrypi kernel: [355577.643224] [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c) from [<c001a838>] (bcm_mailbox_property+0x30/0x15c)
Oct  6 22:43:09 raspberrypi kernel: [355577.643256] [<c001a838>] (bcm_mailbox_property+0x30/0x15c) from [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8)
Oct  6 22:43:09 raspberrypi kernel: [355577.643283] [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8) from [<c02b708c>] (thermal_zone_device_update+0x2c/0x240)
Oct  6 22:43:09 raspberrypi kernel: [355577.643312] [<c02b708c>] (thermal_zone_device_update+0x2c/0x240) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:43:09 raspberrypi kernel: [355577.643336] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:43:09 raspberrypi kernel: [355577.643370] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:43:09 raspberrypi kernel: [355577.643410] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:43:09 raspberrypi kernel: [355577.643429] INFO: task kworker/0:2:22693 blocked for more than 120 seconds.
Oct  6 22:43:09 raspberrypi kernel: [355577.643438] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:43:09 raspberrypi kernel: [355577.643446] kworker/0:2     D c03a023c     0 22693      2 0x00000000
Oct  6 22:43:09 raspberrypi kernel: [355577.643485] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c039ef90>] (schedule_timeout+0x158/0x1e0)
Oct  6 22:43:09 raspberrypi kernel: [355577.643513] [<c039ef90>] (schedule_timeout+0x158/0x1e0) from [<c039fc80>] (__down+0x88/0xc0)
Oct  6 22:43:09 raspberrypi kernel: [355577.643548] [<c039fc80>] (__down+0x88/0xc0) from [<c0040318>] (down+0x60/0x64)
Oct  6 22:43:09 raspberrypi kernel: [355577.643573] [<c0040318>] (down+0x60/0x64) from [<c001a7d0>] (bcm_mailbox_read+0x60/0x98)
Oct  6 22:43:09 raspberrypi kernel: [355577.643595] [<c001a7d0>] (bcm_mailbox_read+0x60/0x98) from [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c)
Oct  6 22:43:09 raspberrypi kernel: [355577.643630] [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c) from [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114)
Oct  6 22:43:09 raspberrypi kernel: [355577.643656] [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114) from [<c02b818c>] (__cpufreq_driver_target+0x38/0x54)
Oct  6 22:43:09 raspberrypi kernel: [355577.643680] [<c02b818c>] (__cpufreq_driver_target+0x38/0x54) from [<c02ba934>] (do_dbs_timer+0x1c4/0x394)
Oct  6 22:43:09 raspberrypi kernel: [355577.643704] [<c02ba934>] (do_dbs_timer+0x1c4/0x394) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:43:09 raspberrypi kernel: [355577.643728] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:43:09 raspberrypi kernel: [355577.643755] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:43:09 raspberrypi kernel: [355577.643785] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:45:09 raspberrypi kernel: [355697.648625] INFO: task kworker/0:1:22597 blocked for more than 120 seconds.
Oct  6 22:45:09 raspberrypi kernel: [355697.648649] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:45:09 raspberrypi kernel: [355697.648663] kworker/0:1     D c03a023c     0 22597      2 0x00000000
Oct  6 22:45:09 raspberrypi kernel: [355697.648772] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34)
Oct  6 22:45:09 raspberrypi kernel: [355697.648807] [<c03a0c24>] (schedule_preempt_disabled+0x24/0x34) from [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c)
Oct  6 22:45:09 raspberrypi kernel: [355697.648870] [<c039f7f4>] (__mutex_lock_slowpath+0xac/0x13c) from [<c001a838>] (bcm_mailbox_property+0x30/0x15c)
Oct  6 22:45:09 raspberrypi kernel: [355697.648904] [<c001a838>] (bcm_mailbox_property+0x30/0x15c) from [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8)
Oct  6 22:45:09 raspberrypi kernel: [355697.648935] [<c02b80cc>] (bcm2835_get_temp_or_max.isra.0+0x50/0xb8) from [<c02b708c>] (thermal_zone_device_update+0x2c/0x240)
Oct  6 22:45:09 raspberrypi kernel: [355697.648964] [<c02b708c>] (thermal_zone_device_update+0x2c/0x240) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:45:09 raspberrypi kernel: [355697.648989] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:45:09 raspberrypi kernel: [355697.649023] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:45:09 raspberrypi kernel: [355697.649064] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)
Oct  6 22:45:09 raspberrypi kernel: [355697.649084] INFO: task kworker/0:2:22693 blocked for more than 120 seconds.
Oct  6 22:45:09 raspberrypi kernel: [355697.649092] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  6 22:45:09 raspberrypi kernel: [355697.649101] kworker/0:2     D c03a023c     0 22693      2 0x00000000
Oct  6 22:45:09 raspberrypi kernel: [355697.649139] [<c03a023c>] (__schedule+0x2b0/0x5a0) from [<c039ef90>] (schedule_timeout+0x158/0x1e0)
Oct  6 22:45:09 raspberrypi kernel: [355697.649165] [<c039ef90>] (schedule_timeout+0x158/0x1e0) from [<c039fc80>] (__down+0x88/0xc0)
Oct  6 22:45:09 raspberrypi kernel: [355697.649199] [<c039fc80>] (__down+0x88/0xc0) from [<c0040318>] (down+0x60/0x64)
Oct  6 22:45:09 raspberrypi kernel: [355697.649226] [<c0040318>] (down+0x60/0x64) from [<c001a7d0>] (bcm_mailbox_read+0x60/0x98)
Oct  6 22:45:09 raspberrypi kernel: [355697.649248] [<c001a7d0>] (bcm_mailbox_read+0x60/0x98) from [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c)
Oct  6 22:45:09 raspberrypi kernel: [355697.649281] [<c001a8cc>] (bcm_mailbox_property+0xc4/0x15c) from [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114)
Oct  6 22:45:09 raspberrypi kernel: [355697.649308] [<c02bbb08>] (bcm2835_cpufreq_driver_target+0x84/0x114) from [<c02b818c>] (__cpufreq_driver_target+0x38/0x54)
Oct  6 22:45:09 raspberrypi kernel: [355697.649333] [<c02b818c>] (__cpufreq_driver_target+0x38/0x54) from [<c02ba934>] (do_dbs_timer+0x1c4/0x394)
Oct  6 22:45:09 raspberrypi kernel: [355697.649358] [<c02ba934>] (do_dbs_timer+0x1c4/0x394) from [<c0035244>] (process_one_work+0x150/0x40c)
Oct  6 22:45:09 raspberrypi kernel: [355697.649382] [<c0035244>] (process_one_work+0x150/0x40c) from [<c0035824>] (worker_thread+0x150/0x498)
Oct  6 22:45:09 raspberrypi kernel: [355697.649408] [<c0035824>] (worker_thread+0x150/0x498) from [<c003aa0c>] (kthread+0x88/0x94)
Oct  6 22:45:09 raspberrypi kernel: [355697.649441] [<c003aa0c>] (kthread+0x88/0x94) from [<c000e9fc>] (kernel_thread_exit+0x0/0x8)


User avatar
heatfanjohn
Posts: 28
Joined: Fri Jun 28, 2013 5:18 pm
Location: Davie, FL

Re: Camera hangs using -ex verylong

Mon Oct 07, 2013 11:59 am

Yes, I was hoping that the stack traces with debug enabled and the kernel messages might help show where the issue is.

jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 24188
Joined: Sat Jul 30, 2011 7:41 pm

Re: Camera hangs using -ex verylong

Mon Oct 07, 2013 12:48 pm

heatfanjohn wrote:Yes, I was hoping that the stack traces with debug enabled and the kernel messages might help show where the issue is.
The issue is that we are sending some parameters to the camera, and it's dying. The parameters appear correct - just that past a certain line length, it all stops working. I'm talking to Omnivision about it as there doesn't appear to be anything wrong with the numbers. This code works fine on others camera so it's something about the Omnivision (we think we have seen it on another Omnivision device as well). Unfortunately the Omnivision guy I know is very busy at the moment. It probably a register setting we need to tweak somewhere, but I don't know which one and camera datasheets are notoriously vague.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
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gordon77
Posts: 4311
Joined: Sun Aug 05, 2012 3:12 pm

Re: Camera hangs using -ex verylong

Mon Oct 07, 2013 2:03 pm

If its the string length thats too long how does that tie in with your comment about > 350mS the other day ?

Gordon77

jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 24188
Joined: Sat Jul 30, 2011 7:41 pm

Re: Camera hangs using -ex verylong

Mon Oct 07, 2013 2:35 pm

gordon77 wrote:If its the string length thats too long how does that tie in with your comment about > 350mS the other day ?

Gordon77
String length? Not sure I mentioned string length. Line length? That's the line of pixels you pull off the sensor, and to extend exposure you make the line longer than the number of pixels, hence each line takes longer to pull off the sensor (lots of blank space at the end) hence increasing the exposure.

When I get to a particular line length (i.e to give about 350ms exposure), the camera stops working.
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gordon77
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Joined: Sun Aug 05, 2012 3:12 pm

Re: Camera hangs using -ex verylong

Mon Oct 07, 2013 2:39 pm

Sorry mis-understood, I thought you meant the length of the parameter line.

jamesh
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Joined: Sat Jul 30, 2011 7:41 pm

Re: Camera hangs using -ex verylong

Mon Oct 07, 2013 2:41 pm

gordon77 wrote:Sorry mis-understood, I thought you meant the length of the parameter line.
No worries - it was worth explaining more fully anyway!
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
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gordon77
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Joined: Sun Aug 05, 2012 3:12 pm

Re: Camera hangs using -ex verylong

Mon Oct 07, 2013 2:43 pm

jamesh wrote:
gordon77 wrote:Sorry mis-understood, I thought you meant the length of the parameter line.
No worries - it was worth explaining more fully anyway!
Appreciated :D

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