[mythtv-users] Black screen after idle

[Greg]

On 8/16/20 6:57 PM, DryHeat122 wrote:
> I recently upgraded to Ubuntu 18.04/Myth 31.  I leave the frontend 
> running all the time and just turn off the monitor when I'm not 
> watching anything.  Twice now, the following has happened.  After the 
> system has sat idle for some time (overnight this time) I turn on the 
> monitor and the screen is black.  I cannot change to a terminal window 
> with ctl-alt-F2.  However, I can SSH to the myth box from another 
> machine and issue terminal commands just fine.  Rebooting fixes the 
> problem.  I have all the screen-saver and sleep functionality turned 
> off, and the monitor works fine on other inputs, so I don't think it's 
> either of those things.
>
> I have searched the black screen symptom and the threads I find (for 
> example this one 
> <https://askubuntu.com/questions/1085807/black-screen-after-installation-of-ubuntu-18-04>) 
> are about this problem happening at boot, not after the machine has 
> been sitting idle for some time.  It also doesn't happen 
> consistently, maybe twice in the last couple weeks.
>
> Has anyone experienced this problem before?  Any pointers for how to 
> fix or troubleshoot? Thanks......Steve
>
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Under settings,power, do you have blank screen set to never and 
automatic suspend too off? One other thing you can look at is your BIOS. 
There is some settings in there that can cause that also. You didn't say 
what video card you are using. It could be a driver issue. If it's 
onboard video, try a card if you happen to have one...

Good luck



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