I'm having a hard time figuring out what causes this to happen. Sometimes the screen goes blank / black when my son is using his computer. Sometimes it is watching videos in a browser(chrome or playing games in a browser. I think it has also done it when he plays some steam games. When it happens, the computer is still running, as I can ssh into it and start and stop some services, but the display manager (lightdm) hangs and cannot be restarted. I feel like the GPU driver is crashing, which causes the display manager to stop working. If I try to soft reboot it hangs. Anyone have any idea what is happening or things to try. I don't thing there is a power issue nor a load issue as I was able to play ARK on medium setting and it ran fine for 1-2 hours.
Things that have already been discussed on
AMD forums:
- Updated the BIOS to 2.00 (latest) - still issues.
- The monitor is connect to the ASUS GFX card, not the onboard, with a DVI
cable.
- Memory in DIMMs A2 and B2 as instructed by the MOBO docs.
- GPU is connect with 6+2 splitter as the PSU has only 1 6+2. Based on
here and other sources, the PSU seems to be enough power.
I recently removed the R9 GPU to see if the computer still has issues using the APU. AFAIK they both use the same driver.
I'm really looking for ways to see what is crashing, failing, freezing. I can still ssh to the machine when the screen goes blank, but I cannot restart lightdm nor the entire system - I always have to hard reboot it. I've turn on text output so I can get info as the system boots up and powers down.
Computer is:
ASROCK B450M PRO4
AMD A6-9500
Ballistix Sport LT 8GB Kit (4GBx2) DDR4 2666
ASUS Stryx Radeon R9 285
EVGA 430 80+ WHITE
Linuxmint 19.1 Tessa