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by dom
Fri Jul 14, 2017 3:01 pm
Forum: Advanced users
Topic: Under-voltage warnings
Replies: 168
Views: 238363

Re: Under-voltage warnings

If the power drops below the voltage threshold are brief (e.g. a few milliseconds) then you won't spot it on the LED.
But get_throttled has some persistence (matching the visible warning symbol) so it will show any undervoltage events that occurred recently (~ 1 second).
by dom
Tue Jul 11, 2017 3:23 pm
Forum: Advanced users
Topic: Under-voltage warnings
Replies: 168
Views: 238363

Re: Under-voltage warnings

Is the PWR LED lit up when you run this?
Have you got any custom configuration that alters the PWR LED state?
by dom
Fri Jul 07, 2017 9:03 pm
Forum: Advanced users
Topic: Under-voltage warnings
Replies: 168
Views: 238363

Re: Under-voltage warnings

You can use

Code: Select all

vcgencmd get_throttled
See: viewtopic.php?f=63&t=147781&start=50#p972790
by dom
Thu Jun 29, 2017 10:53 am
Forum: Troubleshooting
Topic: New firmware works bad when virtual framebuffer height >2400
Replies: 8
Views: 680

Re: New firmware works bad when virtual framebuffer height >

pik33 wrote:First test result: the new version seems to work OK; the physical screen is still 1920x1200 while the desired virtual screen was 2496
Thanks - this fix will be in future firmware updates.
by dom
Wed Jun 28, 2017 6:22 pm
Forum: Troubleshooting
Topic: New firmware works bad when virtual framebuffer height >2400
Replies: 8
Views: 680

Re: New firmware works bad when virtual framebuffer height >

The seting max_framebuffer_height helped. What was not expected: when the virtual height was set to 2401, the physical height was set to 2400 instead of desired 1200. Expected: set the virtual height to 2400 and don't touch physical height I've had a closer look and I have seen something suspicious...
by dom
Wed Jun 28, 2017 12:33 pm
Forum: Troubleshooting
Topic: New firmware works bad when virtual framebuffer height >2400
Replies: 8
Views: 680

Re: New firmware works bad when virtual framebuffer height >

That is expected behaviour. We consider the 1920x1200 the maximum supported framebuffer resolution. We allow up to double the maximum supported dimensions for a virtual framebuffer (e.g. 3840x2400). But you can change these limits. Try setting, e.g. max_framebuffer_height=1600 and you should be able...
by dom
Mon Jun 19, 2017 11:09 am
Forum: Troubleshooting
Topic: Pi 3 - how to detect low voltage?
Replies: 3
Views: 403

Re: Pi 3 - how to detect low voltage?

by dom
Wed Jun 07, 2017 1:20 pm
Forum: Troubleshooting
Topic: After upgrade I have problem with 2560x1440x60hz resolution
Replies: 5
Views: 690

Re: After upgrade I have problem with 2560x1440x60hz resolut

@raspberrybeginner Running "sudo vcdbg log msg" provides a clue: 000694.556: hdmi: HDMI:EDID filtering out DMT format: 2560x1600p @ 60 Hz (87) with pixel clock 348 MHz and hfp:192 hs:280 hbp:472 The very high resolution requires an overclock of pixel frequency. Try adding (without the comment "#") h...
by dom
Sat Jun 03, 2017 11:34 am
Forum: Advanced users
Topic: Moving Linux kernel to 4.9
Replies: 287
Views: 79142

Re: Moving Linux kernel to 4.9

D'oh, me again, now I'm having the same problem on my Pi3. The problem is I did a apt-get update/dist-upgrade and it downgraded the kernel. Then rpi-update still thinks it's updated to 4.9 (which I guess it's not) so rpi-update isn't allowing it reinstall: Run: sudo rm /boot/.firmware_revision befo...
by dom
Fri Jun 02, 2017 6:29 pm
Forum: Beginners
Topic: KODI? OpenElec? Raspbian? etc. etc.
Replies: 3
Views: 1102

Re: KODI? OpenElec? Raspbian? etc. etc.

Kodi is the mediaplayer application. Raspbian, LibreELEC, OpenELEC, OSMC are distributions (i.e. a complete OS). All can run kodi, with the latter 3 being specifically designed for running kodi. If you just want to run kodi then use a dedicated distribution - everything is optimised to run out of th...
by dom
Tue May 30, 2017 4:49 pm
Forum: Troubleshooting
Topic: Problem with rpi-update
Replies: 3
Views: 479

Re: Problem with rpi-update

Should be resolved now (without requiring gawk to be installed).
See: https://github.com/Hexxeh/rpi-update/issues/244
by dom
Tue May 30, 2017 4:42 pm
Forum: Advanced users
Topic: Moving Linux kernel to 4.9
Replies: 287
Views: 79142

Re: Moving Linux kernel to 4.9

See: https://github.com/Hexxeh/rpi-update/issues/244 for info about gawk/mawk. I will remove the gawk specific code in rpi-update once I've confirmed it fixes the issue. I've also asked our packaging guy why many users have mawk rather than gawk installed (I personally have gawk installed, but I gue...
by dom
Thu May 25, 2017 10:16 am
Forum: Beginners
Topic: Is overclocking safe ?
Replies: 16
Views: 1728

Re: Is overclocking safe ?

pi_lover wrote: Application launch time is the same.
Application launch time will significantly affected by sdcard speed.
There is a long thread here.

You want to have high random access 4K read and writes for good performance on a Pi.
by dom
Wed May 24, 2017 2:37 pm
Forum: Beginners
Topic: Is overclocking safe ?
Replies: 16
Views: 1728

Re: Is overclocking safe ?

(theoretically it will reduce the lifespan of the processor, but if the lifespan is predicted to be decades and you lose a year from that would you care?)
by dom
Wed May 24, 2017 2:34 pm
Forum: Beginners
Topic: Is overclocking safe ?
Replies: 16
Views: 1728

Re: Is overclocking safe ?

After 5 years of allowing overclocking I haven't seen a single report of overclocking harming a Pi. So I'd say it is safe.

Of course too high an overclock may crash, and you could lose data due to the crash, so do your experiments after backing up sdcard, or using a clean install.
by dom
Wed May 17, 2017 3:20 pm
Forum: Advanced users
Topic: Raspberry Pi 3 Video decoding
Replies: 13
Views: 12333

Re: Raspberry Pi 3 Video decoding

mp42 is a hacked version of mpeg-4 that pre-dates the standard (see here).
We can't hardware decode these files.
This format is quite old, so typically on SD resolution so can be software decoded using something like Kodi.
by dom
Wed May 17, 2017 11:25 am
Forum: Advanced users
Topic: Raspberry Pi 3 Video decoding
Replies: 13
Views: 12333

Re: Raspberry Pi 3 Video decoding

cjan wrote:is there a way to decode Xvid (.avi) such as w32codecs?
In general xvid is just MPEG-4 and will play fine.
If you have a problem file then post mediainfo - there may be some configuration that isn't supported.
by dom
Tue May 16, 2017 12:17 pm
Forum: Advanced users
Topic: Moving Linux kernel to 4.9
Replies: 287
Views: 79142

Re: Moving Linux kernel to 4.9

Yes, I was talking about the kernel version after the version 4.9. ;) Should I expect any problems with the three newer ones? Well 4.12 is brand new (at rc1 level upstream) so treat that as experimental. 4.10 and 4.11 have no known issues (they have been used in nightly LibreELEC builds for some ti...
by dom
Tue May 16, 2017 10:36 am
Forum: Advanced users
Topic: Moving Linux kernel to 4.9
Replies: 287
Views: 79142

Re: Moving Linux kernel to 4.9

Hallo32 wrote:Hi, are there any plans for the next kernel version the foundation will use?
We've said the next raspbian image will use 4.9.
Are you talking about after that? Too early to say. 4.10, 4.11 and 4.12 are all available if you build yourself.
Raspbian is unlikely to switch away from 4.9 for many months.
by dom
Mon May 15, 2017 11:11 am
Forum: Advanced users
Topic: Raspberry Pi 3 Video decoding
Replies: 13
Views: 12333

Re: Raspberry Pi 3 Video decoding

I updated repos and did a sudo apt get install again, ending up with a kodi version 17.1, build git:20170401-7804a92-dirty and it only plays the sound of that mkv. any idea how to fix it? Did you update the rest of distribution? sudo apt-get update && sudo apt-get dist-upgrade would be recommended ...
by dom
Sat May 13, 2017 12:49 pm
Forum: Advanced users
Topic: Non-root GPIO access broken with 4.9 kernel on Pi1
Replies: 14
Views: 2152

Re: Non-root GPIO access broken with 4.9 kernel on Pi1

my non-working system did not have raspberrypi-sys-mods installed, while my working systems did Do you know why raspberrypi-sys-mods was missing? It should be installed by default on raspbian jessie. Was it manually removed? Did you update from a non-supported version (wheezy)? Some other means of ...
by dom
Fri May 12, 2017 6:50 pm
Forum: Advanced users
Topic: Non-root GPIO access broken with 4.9 kernel on Pi1
Replies: 14
Views: 2152

Re: Non-root GPIO access broken with 4.9 kernel on Pi1

I've tried your test on 4.9 kernel on both pi1 and pi3 and it worked for me. Anyone else tried?
by dom
Fri May 05, 2017 1:55 pm
Forum: Troubleshooting
Topic: Display color issue
Replies: 1
Views: 164

Re: Display color issue

Try "config_hdmi_boost=7". If that doesn't fix it you can increase it up to 11.
by dom
Fri May 05, 2017 11:59 am
Forum: Advanced users
Topic: Moving Linux kernel to 4.9
Replies: 287
Views: 79142

Re: Moving Linux kernel to 4.9

Out of curiosity, is there a mail list or something that pre-announces such kind of branch changes? Threads like this one in the advanced users forum are the usual places where changes are discussed. You can also follow the raspberrypi dev twitter channel where you will see all github commits (but ...
by dom
Wed May 03, 2017 7:09 pm
Forum: General discussion
Topic: Where to buy WD PiDrive
Replies: 5
Views: 467

Re: Where to buy WD PiDrive

I'm using a standard micro-USB cable (i.e. same as used to power Pi) connected to a single USB port on Pi3 without issue.

Note: this is the 314G version, The 1TB version does require more power than the Pi can supply.

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