Bug 1303750

Can you try another driver, e.g. vesa?

Not sure what you are suggesting; use xorg.conf to force a different driver?  Maybe, if you tell me what driver.  I need you to be more explicit.  vesa is ambiguous because I think X11 always loads the "vesa" module in addition to other ones.  How do you prevent it from loading radeon, too?  For example, my netbook loads vesa, intel, fbdev, modsetting, etc.  Does that count?

I mean, I used to create x11.conf by hand, but it's been a really long time since those days.  Can you send a config?

The problem also doesn't happen if I disable DPMS in xscreensaver.  So, it blanks and locks, but monitor doesn't sleep.  That works; xscreensaver is there as soon as I hit a key or mouse.  It's definitely DPMS.

Remember, I have to reboot every time this happens, so if we can plan a good test, I'd feel more comfortable.

You know what, now that I think about it, I *did* have the same problem on my F23 VM.  It uses qxl driver.  I'm updating now so it will have same version as my other system.  We'll see if I can reproduce there...

vesa is "vesa" driver. You have to specify it explicitly in xorg.conf (so if you don't have it, you have to create it).


By the way, what happens if
- You terminate xscreensaver with
  $ xscreensaver-command -exit
- Then you forcely turn DPMS to off
  $ xset dpms force off
?

Okay, so, it just happened when xscreensaver wasn't even running.  It also isn't occurring in my VM.  And, I checked xset: DPMS is already "Disabled".  So, I guess that's that.

This is now a serious problem, but we've eliminated xscreensaver.  I cannot prevent this and it forces me to reboot every time it happens; good thing I can get to vconsole.  It is not only caused by screensaver blank events, but occurs without screensaver or power management enabled.  I'm really confused.

I've now disabled all the power saving features on my monitor and disabled DP 1.2 support.  I'm guessing my monitor put itself to sleep, but why is this so horribly unrecoverable?  I think the xorg-x11-drv-ati team could help.

I found this in the journal, though:
Feb 01 16:00:19 <hostname> kernel: [drm:radeon_dp_link_train [radeon]] *ERROR* displayport link status failed
Feb 01 16:00:19 <hostname> kernel: [drm:radeon_dp_link_train [radeon]] *ERROR* clock recovery failed
Feb 01 16:00:19 <hostname> kernel: [drm:radeon_dp_link_train [radeon]] *ERROR* displayport link status failed
Feb 01 16:00:19 <hostname> kernel: [drm:radeon_dp_link_train [radeon]] *ERROR* clock recovery failed

That's the same time that I had this last seemingly unprovoked problem.

This problem hasn't recurred since disabling DP 1.2 support on my monitor.  I hope this means that bad problem is fixed for good.  But the problem is still unexplained.

And now the monitor never sleeps, which isn't good, but is much less terrible.  I may open a different bug for that; it's probably a separate issue.

Okay, it's not just a DP 1.2 issue.  I ran for a week without problems when all power-management was disabled.  But, I turned DPMS back on and, after the monitor went to sleep, I couldn't get it to wake up again.  I had to reboot.

Here are the errors associated with this most recent event:
Feb 14 21:11:17 <hostname> kernel: [drm:si_dpm_set_power_state [radeon]] *ERROR* si_restrict_performance_levels_before_switch failed
Feb 14 21:11:18 <hostname> kernel: [drm:si_dpm_set_power_state [radeon]] *ERROR* si_restrict_performance_levels_before_switch failed
Feb 14 21:12:51 <hostname> kernel: [drm:si_dpm_set_power_state [radeon]] *ERROR* si_restrict_performance_levels_before_switch failed

This is more of a problem than you might think, too.  I can't even turn off my monitor because that seems to initiate very brief random "glitches".  It's hard to describe but, if I turn the monitor off and then back on, I get intermittent, sudden, graphics glitches and, simultaneously, I hear a pop from the monitor speakers as I get audio via displayport to my monitor speakers.  So, that isn't really a valid workaround.

Please advise.  I'm willing to help troubleshoot, as always.

Once switching to kernel. Perhaps kernel/X people will look at this.

https://fedoraproject.org/wiki/KernelBugTriage#Video_Subsystem_bugs

The random glitches have become very infrequent and brief over the last three months.  I still catch them every once and a while, but they last only a moment, barely noticeable.

Additionally, after upgrading to F24, the main problem with monitor suspend/resume went away.  I'm not sure what accounts for this, but I have confirmed it.  I now have xscreensaver using DPMS and haven't experiences any resume problems, just like it was before I opened this bug.

(I also switched back to GDM from LightDM, but after I confirmed this fix.)

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This was fixed in F24 but, I think, it is back.  I haven't had a chance to test since updating to 4.7.5 because X11 is now crashing frequently and I'm afraid to try this while I'm busy with a project.  I'll test soon.  But, I've had to disable monitor sleep for the last month as a precaution.

Lost track of this problem.  Seems to be gone in F25.

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and issuing updates for Fedora 24. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '24'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version'
to a later Fedora version.

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able to fix it before Fedora 24 is end of life. If you would still like
to see this bug fixed and are able to reproduce it against a later version
of Fedora, you are encouraged  change the 'version' to a later Fedora
version prior this bug is closed as described in the policy above.

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lifetime, sometimes those efforts are overtaken by events. Often a
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