[GRLUG] screen not recovering

Michael Mol mikemol at gmail.com
Thu Nov 25 09:10:06 EST 2010


I've seen similar on Arch Linux lately. I finally discovered that using
Ctrl-Alt-F(N) keys to switch between virtual terminals got things
working for me again.

In the process of discovering a workaround, I also saw something really
weird...the blinking cursor of a text VT, with Xorg's mouse cursor drawn
and live.

I think it's representative of a bug in the kernel's new 'modesetting'
behavior. I don't know the details on how that's supposed to work, but I
believe it has to do with userland applications being able to ask the
kernel to change display resolutions. (Replacing, I guess, things like
svgalib and FrameBuffer apps.)

On Thu, 2010-11-25 at 08:22 -0500, Eric Beversluis wrote: 
> Lately a few times my screen has seemed to go out on me--mostly, I
> think, after the computer has been sitting and has locked and dimmed.
> When I come back and use the mouse/touchpad to get to the login screen,
> it does not respond. If I power down the machine and reboot, it comes up
> fine, so I think it's a software rather than hardware problem. Any ideas
> about how I might troubleshoot/fix this?
> 
> Running openSUSE 11.2 on lenove 3000 N100. All software is updated.
> 
> Thanks.
> 
> EB
> 
> 



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