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by Gert
Sat Mar 14, 2020 7:08 pm
Forum: Troubleshooting
Topic: RPI3 which USB port to use?
Replies: 1
Views: 97

RPI3 which USB port to use?

Hello All, @Admin : not really a troubleshooting question, but I wouldn't which other department to put this. Is there any circuit based understanding of which of the 4 USB ports on an RPI3 is 'preferable' ? Sometimes on PC boards you'll read that certain ports are connected to the CPU via different...
by Gert
Sat Mar 14, 2020 7:03 pm
Forum: Troubleshooting
Topic: Make tty accessable for non-root program
Replies: 4
Views: 193

Re: Make tty accessable for non-root program

@rpdom,

OK, thank you for clarifying.

Cheers,
Gert
by Gert
Sat Mar 14, 2020 7:01 pm
Forum: Networking and servers
Topic: fstab to use machine name rather than IP for windos samba share
Replies: 3
Views: 189

Re: fstab to use machine name rather than IP for windos samba share

@hortimech & list Yes, that is all possible and will fix the mount issue. However the win7 box is getting DHCP from the router. So the 141 address is kind-of random. Yes, that can be dealt with by telling the router to give the same IP# to the MAC address every time. I was looking for a more elegant...
by Gert
Fri Mar 13, 2020 4:13 am
Forum: Networking and servers
Topic: fstab to use machine name rather than IP for windos samba share
Replies: 3
Views: 189

Re: fstab to use machine name rather than IP for windos samba share

OK, so on the windows7 machine I found a VM with kubuntu where I somehow was able to have samba do the right thing. Kubuntu VM: (Note all the shares from \\SHIVA which is the win7 machine in question) smbtree GLOBAL GGHOME \\UBUNTU ubuntu server (Samba, Ubuntu) \\UBUNTU\IPC$ IPC Service (ubuntu serv...
by Gert
Fri Mar 13, 2020 3:11 am
Forum: Networking and servers
Topic: fstab to use machine name rather than IP for windos samba share
Replies: 3
Views: 189

fstab to use machine name rather than IP for windos samba share

Hi all, I have a win7 machine using the workgroup methodology to connect to other windows boxes and a few RPIs. The RPIs have samba installed, the smb.conf is setup to share disks from the RPIs and the windows7 machine happily shows the shares in the file browser. Now the other direction. The window...
by Gert
Mon Mar 09, 2020 6:15 pm
Forum: Troubleshooting
Topic: Make tty accessable for non-root program
Replies: 4
Views: 193

Re: Make tty accessable for non-root program

Hi rpdom, Add your user to the "dialout" group. sudo usermod -a -G dialout gottsch Log out and back in again for it to take effect. Thanks! That is working fine now. There was a comment in another discussion that changing the group setting is not recommended for security reasons. https://www.raspber...
by Gert
Mon Mar 09, 2020 5:50 pm
Forum: Troubleshooting
Topic: Headless PI via VNC low color resolution
Replies: 3
Views: 127

Re: Headless PI via VNC low color resolution

Hi, Using this from a fresh install from raspbian from the web. Cheers, Gert Which version of VNC are you using? vncserver -help TightVNC Server version 1.3.9 Usage: vncserver [<OPTIONS>] [:<DISPLAY#>] vncserver -kill :<DISPLAY#> <OPTIONS> are Xtightvnc options, or: -name <DESKTOP-NAME> -depth <DEPT...
by Gert
Mon Mar 09, 2020 5:45 am
Forum: Troubleshooting
Topic: Make tty accessable for non-root program
Replies: 4
Views: 193

Make tty accessable for non-root program

Hi All, Using the fine RF sensors from https://www.jemrf.com/ The little python script that polls the serial tty works fine as root. But in user level the code has no access permissions to the tty. What's the best solution to properly grant user code access to the tty. [email protected]:~/JemRF/rf...
by Gert
Mon Mar 09, 2020 5:11 am
Forum: Troubleshooting
Topic: Headless PI via VNC low color resolution
Replies: 3
Views: 127

Headless PI via VNC low color resolution

Hello All,

Running a RPI3 headless via wifi on VNC seems to severely cut the color palette.

Image

The same screen looks OK on wired network cable.
Any idea what's going on? Is my wifi that bad?

Cheers,
Gert
by Gert
Tue Mar 03, 2020 4:10 am
Forum: Troubleshooting
Topic: glances shows CPU_IOWAIT issue
Replies: 0
Views: 53

glances shows CPU_IOWAIT issue

Hi All, Running RPI4B with buster. System is headless with access via VNC. Performance and behavior are otherwise fine. Glances is showing : No warning or critical alert detected 2020-03-02 19:47:50 (0:00:09) - CRITICAL on CPU_IOWAIT (Min:38.9 Mean:62.8 Max:77.3) 2020-03-02 19:42:38 (0:00:12) - CRIT...
by Gert
Mon Mar 02, 2020 6:53 pm
Forum: Troubleshooting
Topic: Unknown activity of user 'pi'. Is this a hack ?
Replies: 4
Views: 189

Re: Unknown activity of user 'pi'. Is this a hack ?

Hi Jamesh Change the Pi password and see if it still happens. Yes, I'll do that. Now if I were an intruder and I would have determined that pi is on the sudoers list first thing I would do is to deploy a root backdoor for just this situation. Is there a way for me now to see i.e. the cmd history of ...
by Gert
Mon Mar 02, 2020 4:54 pm
Forum: Troubleshooting
Topic: Unknown activity of user 'pi'. Is this a hack ?
Replies: 4
Views: 189

Unknown activity of user 'pi'. Is this a hack ?

Hello All, Using RPI4B with buster. I've made my own user account and no longer use 'pi' at all. There is still however some activity by user 'pi'. # grep 'user pi' /var/log/auth.log Mar 2 08:38:10 rpi4b lightdm: pam_unix(lightdm-autologin:session): session closed for user pi Mar 2 08:38:10 rpi4b lo...
by Gert
Tue Feb 25, 2020 7:46 pm
Forum: Troubleshooting
Topic: Glances tells lxpanel causes swap problem
Replies: 0
Views: 58

Glances tells lxpanel causes swap problem

Hi All,

To get some better info on system activity I installed glances. Looking at the output the tool highlights lxpanel as causing swap problems. Is this reason of concern? What to do about it?

Code: Select all

2020-02-25 11:12:43 (ongoing) - MEMSWAP (99.0): lxpanel, lxpanel, mount.ntfs-3g
Cheers,
GErt
by Gert
Fri Feb 21, 2020 6:18 am
Forum: Networking and servers
Topic: Nginx config fails to exclude bots
Replies: 5
Views: 264

Re: Nginx config fails to exclude bots

@rpdom, Thanks for taking a look at this. The RPI is just doing very simple things running my weather sensors. I am not going to take the risk of changing the OS, as maybe there will be side effects on my interfacing code. The functionality to support this log file issue was probably only introduced...
by Gert
Thu Feb 20, 2020 4:40 am
Forum: Networking and servers
Topic: Nginx config fails to exclude bots
Replies: 5
Views: 264

Re: Nginx config fails to exclude bots

Hi rpdom, Which version of nginx are you running? dpkg -s nginx Version: 1.2.1-2.2+wheezy4+deb7u1 I did an update + upgrade sequence but no success. (Note this is an older OS. I've interest of doing a full revamp of the OS. This RPI is just running my weather sensor and is doing that just fine. Chee...
by Gert
Mon Feb 17, 2020 1:02 am
Forum: Networking and servers
Topic: Nginx config fails to exclude bots
Replies: 5
Views: 264

Nginx config fails to exclude bots

Hi All, I am trying to exclude logging for bot access to nginx on my RPI. But so far my edits of the conf file have all failed. The config file: user www-data; worker_processes 2; pid /var/run/nginx.pid; events { worker_connections 768; } http { sendfile on; tcp_nopush on; tcp_nodelay on; types_hash...
by Gert
Fri Jan 24, 2020 3:01 am
Forum: Troubleshooting
Topic: Debug messages from apt-get update
Replies: 2
Views: 146

Re: Debug messages from apt-get update

@GlowInTheDark : Way cool!
Thanks,
Gert
by Gert
Fri Jan 24, 2020 2:01 am
Forum: Troubleshooting
Topic: Debug messages from apt-get update
Replies: 2
Views: 146

Debug messages from apt-get update

Hello All, I have an old RPI2 Mod B running (possibly) on an even older OS version. It's task is to run a weather station and put nice temperature plots on a webpage. It does its job nicely. Just today I accidentally typed 'apt-get update' and got below message. Just wondering if there is any major ...
by Gert
Thu Jan 09, 2020 3:54 am
Forum: Troubleshooting
Topic: Copy paste in VNC xterm not working
Replies: 2
Views: 116

Re: Copy paste in VNC xterm not working

Hi pi-anazazi,

autocutsel is deployed. Must be something else. :-(

Cheers,
Gert
by Gert
Tue Jan 07, 2020 4:39 am
Forum: Troubleshooting
Topic: Copy paste in VNC xterm not working
Replies: 2
Views: 116

Copy paste in VNC xterm not working

Hi All, Using a headless RPI with vnc from win7 PC. Turns out that copy paste is behaving oddly. * Not working from vnc xterm to vnc xterm * Working from win7 editor to vnc xterm I've captured the issue in this little screen grab: http://skywatcher.space/download/rpi_vnc_copy_paste_bug_2020-01-06_20...
by Gert
Fri Nov 29, 2019 3:08 am
Forum: Graphics, sound and multimedia
Topic: Please suggest HW SW combo for simple OTA DVR on RPI3B
Replies: 0
Views: 247

Please suggest HW SW combo for simple OTA DVR on RPI3B

Hi All, I have an old Win7 PC which I only keep alive because of the Windows Media Center of which I pretty much only use the OTA DVR recording feature. In 2020 TV guide service in Media Center is discontinued and I want to have a similar functionality with RPI. I read a lot online of client server ...
by Gert
Mon Oct 07, 2019 1:45 am
Forum: Troubleshooting
Topic: How to mount usb stick with ext4 for all users
Replies: 3
Views: 453

How to mount usb stick with ext4 for all users

Hi All, Is it a good idea to use ext4 on a USB stick for a RPI4 as occasional storage? Using gparted I went ahead and partitioned and formatted the USB stick accordingly. Mounting via fstab I found 'somewhere' a line that was supposed to be 'good' for USB stick. (maybe as a side question someone can...
by Gert
Thu Sep 19, 2019 10:14 pm
Forum: Troubleshooting
Topic: Can fstab be adjusted for time delay when spin-up of disk takes longer ?
Replies: 5
Views: 299

Re: Can fstab be adjusted for time delay when spin-up of disk takes longer ?

OK, I have put a mount -a into crontab with a 30sec wait after boot. Kind of awkward but works and nothing else is slowed down. Was just wondering if there is a flag in fstab to wait for a device to be ready (or ready+xx sec) to execute the mounting.
Cheers,
Gert
by Gert
Wed Sep 18, 2019 12:19 am
Forum: Troubleshooting
Topic: Can fstab be adjusted for time delay when spin-up of disk takes longer ?
Replies: 5
Views: 299

Can fstab be adjusted for time delay when spin-up of disk takes longer ?

Hello All, To build a mini-NAS I have bought a new Seagate 5T 2.5inch disk and attached the USB to the RPI3. (Yes, it's slow and I plan to upgrade this rig to RPI4 with USB3) Seems the spin-up and self test of the disk take longer during the boot sequence than the point in time when mount is called....
by Gert
Tue Sep 17, 2019 12:33 am
Forum: Networking and servers
Topic: More disks on RPI4B -> Powered HUB or bigger supply ?
Replies: 5
Views: 542

Re: More disks on RPI4B -> Powered HUB or bigger supply ?

Hi, The 5V USB power is limited to 1.2A by the USB controller chip. That is usually enough to run 1 HDD only. Providing more Amps to the RPi power input will not help. In prev. thread rpdom said : " Unless things have changed on the Pi4, all the power pins for the USB ports are connected together. T...

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