Debian 11 Bullseye dual monitor freezes after locking it and more...

linuxnewbie137 · 02-05-2022, 05:23 AM

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Removing one stick will have an impact larger than mere loss of available memory on most desktop PCs. Dual channel RAM requires sticks be installed in pairs in order to run RAM in dual channel mode. I've seen in RAM testing speed as low as 56% of normal with one stick removed. More often it's less than that, but it's very noticeable in normal use, especially when total RAM is marginal.

I have 3 sticks of memory, 3x4 12GB in total. 2 same brand, model etc in dual channel and 1 different brand, model etc but same or more speed (I don't remember), it shouldn't be a problem though as GHz of RAM are downgraded to MOBO's max. The thing is that the single stick was my friend's and he gave it to me because a technician told him it was broken, but I managed to make it work and added to my system. So, if I remove it I should not have any problem with RAM speeds as dual channel sticks will work regularly.

Quote:

Glitches are a common result of poor quality power, regardless of what it is that causes poor quality.

A more powerful PSU won't help unless the existing PSU is simply inadquate. Installing a 600W unit when a quality 350W would be ideal won't make anything better. A PSU capable of considerably in excess of need will be less efficient.

Changing PSU isn't about a more powerful one but replacing mine that is kind of malfunctional. I am not sure though about its malfuncionality, it just causing a noise as more power is required.

BTW I changed the PSU and the random glitches persist, I will let you know about any freezes.

linuxnewbie137 · 02-07-2022, 08:12 AM

Freeze persists as well, but after the last time I changed the PCI slot and it hasn't freeze yet, it became a bit laggy/less smooth than before though. Then I changed the backend renderer from OpenGL 3.1 (scale mode: Accurate) to, default option, OpenGL 2.0 (scale mode: Accurate), until now it is free of lags or freezes. However it seems to be a little bit slower in rendering things, like a detached firefox tab, not a big deal (at the moment) though.

OpenGL 3.1 is compatible with my GPU as far as I know. I believe those freezes are caused by a combination of OpenGL + Scale Method + GPU driver, but how can I find the right combination that works perfect for my hardware?

Unfortunately, I can't find any detailed info about scaling methods (Accurate, Crisp, Smooth) and combinations with OpenGL etc.

linuxnewbie137 · 02-11-2022, 10:40 AM

Could those freezes caused by a semi broken/broken PCI slot?

mrmazda · 02-11-2022, 11:55 AM

I have to think so, if any of the contacts in it have been caused to touch each other.

linuxnewbie137 · 02-14-2022, 09:45 AM

Quote:

Originally Posted by mrmazda

I have to think so, if any of the contacts in it have been caused to touch each other.

So... I think I have tried every possible combination in between 2 GPUs, 2 PCI slots, 2 PSUs, 2 backend renderers and 3 scaling methods. It seems that the freeze doesn't happen only if I use OpenGL 2.0, but using 2.0 makes the system a bit slow and not as smooth as it should be (specifically when a youtube video is being played, I mean it affects the video enough). So, technically I still have a problem.

I found out that my old GPU (9500 GT) freezes even with OpenGL 2.0. The 440 GT seems it doesn't, now that I changed its PCI slot and stopped using chrome. After I changed its slot I think it froze once, but not after I stopped using chrome, yet.

I really didn't have any problem using windows, it shouldn't be a hardware problem. So, my guess now is the OS!?? Maybe another version, like buster, will behave better. I don't really know.

What do you think?

linuxnewbie137 · 02-15-2022, 06:36 AM

By the time (without restarting or shutting down) it becomes more and more laggy, still hasn't freeze yet and it is usable but laggy enough.

I also noticed that latte dock consumes 17% CPU, I don't know if that is related to my problem(s), but is that normal? I believe that if I restart the computer it won't be that high.

Generally my CPU seems to work a lot, PC is like 1 day without restart or shutdown, for no reason. I can hear my PSU trying to supply it with power. I have firefox, firefox dev and discord open. No youtube videos are playing, no calls or video streaming. I can't find any other program consuming enough CPU. The next more consuming application is conky using 3%.

System monitor shows 17% CPU is consumed by latte dock and 3% by conky, but top shows the following:

Code:

# top
top - 14:27:41 up 1 day, 18:02,  3 users,  load average: 2.51, 2.76, 2.78
Tasks: 232 total,   3 running, 229 sleeping,   0 stopped,   0 zombie
%Cpu(s): 11.4 us, 20.3 sy,  0.0 ni, 68.0 id,  0.0 wa,  0.0 hi,  0.2 si,  0.0 st
MiB Mem :  11922.1 total,   1985.5 free,   7439.9 used,   2496.7 buff/cache
MiB Swap:   3814.0 total,   3632.7 free,    181.2 used.   4084.3 avail Mem 

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                                                                   
   1179 quintes+  20   0 2594276 329492  96488 R 135.2   2.7   1627:15 latte-dock                                                                                                
    806 root      20   0  626452 129756  39092 R  75.1   1.1 945:44.55 Xorg                                                                                                      
   1204 quintes+  20   0 1195460 311608  14008 S  21.3   2.6 417:28.26 conky                                                                                                     
3021867 quintes+  20   0 1584188 148392 108188 S  15.3   1.2   3:47.90 ksysguard                                                                                                 
   1349 quintes+  20   0  740640  37976  12684 S   2.3   0.3 151:40.08 python3                                                                                                   
    985 quintes+   9 -11 2503288  24784  17052 S   1.3   0.2  87:29.99 pulseaudio                                                                                                
   2280 quintes+  20   0   40.9g 352272 109744 S   1.3   2.9  63:04.41 Discord                                                                                                   
1719733 quintes+  20   0   12.0g 931132 224228 S   1.0   7.6  18:44.56 firefox-bin                                                                                               
   1090 quintes+  20   0 3668396 189344  69560 S   0.7   1.6  32:36.80 kwin_x11                                                                                                  
1720000 quintes+  20   0   11.2g 504976 111184 S   0.7   4.1  26:31.33 Isolated Web Co                                                                                           
     11 root      20   0       0      0      0 S   0.3   0.0   0:09.03 ksoftirqd/0                                                                                               
1766236 quintes+  20   0 2916748 287780 109360 S   0.3   2.4   1:03.77 Isolated Web Co                                                                                           
1769243 quintes+  20   0 3217432 400264 141228 S   0.3   3.3   2:39.29 Isolated Web Co                                                                                           
2068349 quintes+  20   0   10.8g 343168 105304 S   0.3   2.8   0:51.44 Isolated Web Co                                                                                           
3017317 quintes+  20   0 2556268 139376  86808 S   0.3   1.1   0:03.33 Isolated Web Co                                                                                           
3021915 quintes+  20   0  159568   4680   4312 S   0.3   0.0   0:19.50 ksgrd_network_h                                                                                           
3058843 root      20   0       0      0      0 I   0.3   0.0   0:00.01 kworker/1:2-mm_percpu_wq                                                                                  
      1 root      20   0  164156   8784   6064 S   0.0   0.1   0:01.97 systemd

Who is the 3rd user?
CPU percentages are much higher than those in system monitor. Probably because I have to manually divide them, but even then the values don't match.

linuxnewbie137 · 02-16-2022, 11:36 AM

Unfortunately (or not) I am able to reproduce the freeze on buster 10.11 as well. Only two things I can think of right now. Testing another distro on the same hardware and testing on a fresh install without any configurations.

linuxnewbie137 · 02-18-2022, 02:07 PM

I found out that my 440GT needs 390 legacy driver which is compatible with Debian 11 Bullseye. So, I installed the driver but it keeps crashing kwin. Under compositor section there is the following message after every crash.

Quote:

OpenGL compositing (the default) has crashed KWin in the past.
This was most likely due to a driver bug.
If you think that you have meanwhile upgraded to a stable driver,
you can reset this protection but be aware that this might result in an immediate crash!
Alternatively, you might want to use the XRender backend instead.

Crashes make the compositor to fallback on XRender and they happen randomly either with OpenGL 2.0 or 3.1 (whatever scale method). Despite that, it seems work very good.

mrmazda · 02-20-2022, 04:42 AM

Please use the add to reputation icon/link, or the Yes link on posts that were helpful. Also, mark the thread solved, if indeed you consider the problem solved. If it's not solved, please indicate with detail as best you can how to reproduce the issue.

linuxnewbie137 · 02-21-2022, 04:02 AM

Quote:

Originally Posted by mrmazda

Please use the add to reputation icon/link, or the Yes link on posts that were helpful. Also, mark the thread solved, if indeed you consider the problem solved. If it's not solved, please indicate with detail as best you can how to reproduce the issue.

I still have problem and I can't provide you anything more than I already did. I follow the same steps (e.g firefox tabs detaching, screen lock, watching videos) every time I change something on HW or SW.

All I can do now is to inform you about tests on other distros or HW or whatever.

linuxnewbie137 · 02-23-2022, 12:27 PM

I tried to move my desktop's SSD which contains Debian 11 to my laptop, but without a fresh install. It booted normally, I logged in but the freeze came up after I opened discord, firefox and firefox dev edition, rebooted and then I tried to open virtualbox instead of firefox dev (just in case there was a problem between firefoxes or something) and it happened again.

It is not a matter of RAM because only ~40% of it was in use.