Re: Debian hangs (PREEMPT RT?)

[Alberto Sentieri]

I had a similar problem, but I could ssh into the machine, otherwise I 
would say it was locked. My problem was the video driver (NVIDIA card). 
I fixed it by installing the manufacture driver.


On 6/25/20 3:54 PM, Malte Schmidt wrote:

Dear all,

I'm running Debian 10 with the recent updates using a RT Kernel to run 
a Machine using Linuxcnc. I face the problem that Debian "hangs" i.e. 
becomes completely unresponsive. This includes Keyboard, Mouse and 
also the SysReq + REISUB does no longer work. The system does not 
really "crash" i.e. I keep seeing X. Usually X and keyboard freeze a 
bit before the mouse pointer also stops to move.
I have the feeling that this only occurs when there is a realtime task 
running but I cannot say that for sure.


Not sure if pastebins are appreciated here:
Output of dmesg: https://pastebin.com/zgh6Cw84
Xorg.0.log:https://pastebin.com/eNJCLTWf
/var/log/messages https://pastebin.com/EbJh4qYY

I did spot anything obvious in the logs

This PC was used for a couple of years for Machine control running a 
Realtime Kernel on Debian 7


I'm a bit clueless at this point and would appreciate hints what to 
check for.


Thanks,
Malte

--
Robert Hirsch und Malte Schmidt
Adverrun Drives
Fruehlingstr. 41
90537 Feucht
i...@adverrun.com 

Debian hangs (PREEMPT RT?)

[Malte Schmidt]

Dear all,

I'm running Debian 10 with the recent updates using a RT Kernel to run a
Machine using Linuxcnc. I face the problem that Debian "hangs" i.e. becomes
completely unresponsive. This includes Keyboard, Mouse and also the SysReq
+ REISUB does no longer work. The system does not really "crash" i.e. I
keep seeing X. Usually X and keyboard freeze a bit before the mouse pointer
also stops to move.
I have the feeling that this only occurs when there is a realtime task
running but I cannot say that for sure.

Not sure if pastebins are appreciated here:
Output of dmesg: https://pastebin.com/zgh6Cw84
Xorg.0.log:https://pastebin.com/eNJCLTWf
/var/log/messages https://pastebin.com/EbJh4qYY

I did spot anything obvious in the logs

This PC was used for a couple of years for Machine control running a
Realtime Kernel on Debian 7

I'm a bit clueless at this point and would appreciate hints what to check
for.

Thanks,
Malte

-- 
Robert Hirsch und Malte Schmidt
Adverrun Drives
Fruehlingstr. 41
90537 Feucht
i...@adverrun.com