Fedora :: Display Doesn't Turn Back On After Extended Idle

Apr 16, 2011

I have XFX ATI-HD5670 and use proprietary catalyst 11.2-1 in 64-bit Fedora 14.

I am not sure when this started, or if it ever did work before, but when I started noticing that the screensaver will not turn off the monitor, I set the gnome power manager to make the monitor sleep after an hour.

Now, the display will not turn back on after it has been in sleep mode. I know the system is still running fine as I can ssh from another PC and see that everything seems to be normal, no error message in dmesg, /var/log/Xorg.0.log, etc.

/var/log/Xorg.0.log shows that monitor DPMS is not detected but still enables DPMS:

Is this a problem with catalyst driver? I know it's not the PC or the monitor, because I have a 2nd PC with the same video driver with the same problem, but others without this driver don't (ati open source, nvidia, etc. all work fine.)

I'm wondering if the problem always existed before, but I just didn't notice it because the display sleep mode was never set? If that's the case, my hunch is that it looked like it worked because the monitor was smart enough to turn itself off when the screensaver kicked in and just showed a blank screen, and the video driver was never involved with sleep mode until I set it in gnome power manager, at which point it started showing this problem of not waking up? And because the screensaver was no longer set to blank the screen, but to show some animation, that's why the monitor will never sleep anymore?

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I have searched for a solution to this problem but no luck. I am running FC 11 and out-of-the-box gnome. At first the screensaver worked normally, shutting off the screen after 5 mins. Now it does not do so. I found the following command line suggestion in the forums, and it looks like it may point to a problem -- the screensaver is inactive, but how to make it active? I may be misunderstanding the term inactive, of course. Logically, the screensaver would have to be inactive if I am typing a command.

In any case, the query command shows:

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The only thing I can think of that might be an issue is that using the "appearances" background facility I added a couple dozen pictures that I thought I might use as screen background. Not long after that I discovered that my screen did not go black after 5 mins as expected. Not sure this correlation has any causal meaning, however. I then tried various things, finally returning to the plain (blue) default. That seemed to fix it for a short while, then after a couple of days, the bad or non-behavior returned -- the screensaver does not work.

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My system runs all the time, but I don't want the screen to be on all the time.

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