Ubuntu
kdebase-workspace package

KDE: change from Powersave to Performance fails

Bug #364162 reported by Pascal R.
4
Affects Status Importance Assigned to Milestone
kdebase-workspace (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

I am using a Thinkpad T61 (Intel GM965/GL960 graphics controller)
with Kubuntu 9.04 (installed from Kubuntu 9.04 Beta CD, fully updated today)

Reproduce Bug:
(I don't know the exact English label texts, I am working with german Kubuntu)

System Settings >> Power Management >> General Settings:
Set "With Power Cable connected" to "Performance"
Set "Running on Battery" to "Powersave"

System Settings >> Power Management >> Change Profiles:
For "Performance" Profile Uncheck "Deactivate Composit-extension of KWin"
For "Powersave" Profile Check "Deactivate Composit-extension of KWin"

Restart System.
Power cable is connected.

Switch to Standby (sleep in RAM) or Hibernate (sleep on HDD) mode.

Unplug power cable.

Wake up the machine.
Now the desktop effects are off (no transparency), as expected.

Plug power cable in.
All windows and plasma are disappearing. I can only see the background image of the root user and the mouse cursor. The mouse cursor changes its appearance on some points of the screen (it looks like the windows are still there but invisible).

Unplug power cable again.
Most of the times all of the windows and plasma elements are visible again (without desktop effects as expected)

Only restarting kdm seems to work, to see a desktop with plugged in power cable.

Diagnostics:
When going to sleep mode with power cable not connected and waking up with no power cable, everything works ok.
When going to sleep mode with power cable connected and waking up with power cable connected, everything works ok.

*Update: It seems that this has nothing to do with the described behaviour*
In case of the error state every time the power cable is plugged in (and the desktop disappears) there is a new line in dmesg:
> [ 280.205923] [drm:i915_get_vblank_counter] *ERROR* trying to get vblank count for disabled pipe 0

See original description
Pascal R. (niun)
description: updated
Alessandro Ghersi (alessandro-ghersi)
affects: ubuntu → powerdevil (Ubuntu)
affects: powerdevil (Ubuntu) → kdebase-workspace (Ubuntu)
Revision history for this message
Pascal R. (niun) wrote :

I don't think that this is a duplicate of https://bugs.launchpad.net/bugs/379082 .
There is no screen flashing or brightness changing like described in the other bug. Only the whole Plasma and KWin and all window stuff is disappearing completely (without flashing back or something).

I also updated to the latest xserver-xorg-video-intel package of the Ubuntu karmic repository like Laurens (The rest is still jauty). Now the Error Iine in dmesg I mentioned in the original report is gone, but the problem I described is not gone.
With the updated package I am not able to use Open GL desktop effects but if I am switching to XRender effects, the problem is still there.

description: updated
Revision history for this message
Jonathan Thomas (echidnaman) wrote :

The windows disappearing is just KWin turning desktop effects on.

Revision history for this message
Pascal R. (niun) wrote :

I don't think, you did understand the problem:
The windows are disappearing and they are never coming back until I unplug the Power cable!

If no Standby is involved (just unplug power and plug it in again), everything works fine: After unplugging, the effects are off and after plugging the power cable in the effects are on and everythin works fine.

But if I unplug the power cable in Standby, turning the computer back on and then plugging the power cable in, the windows are disappearing and they are not coming back (until I unplug the power cable again, but in that state my computer is running only a few hours).

Sorry for my bad english. I hope it is clear now.

Revision history for this message
Rich Johnson (nixternal) wrote :

Anyone able to reproduce this on Karmic or is this issue still occurring? I just did this little test and it actually worked for me, which I wasn't expecting it do so, and it looks like we have the same hardware pretty much, though I have a Dell. Anything else I might try to reproduce this beyond what was added? I doubt it as your original report was written perfectly :) Thanks!

Changed in kdebase-workspace (Ubuntu):
status: New → Incomplete
Revision history for this message
Pascal R. (niun) wrote :

Seems to be gone in Kubuntu Karmic. I am unable to reproduce it on the same hardware after installing Karmic beta (was hard to try, because Suspend works only sometimes now, but that's another story).

Revision history for this message
Jonathan Thomas (echidnaman) wrote :

Thanks. I do hope that your other suspend issues get worked out.

Changed in kdebase-workspace (Ubuntu):
status: Incomplete → Fix Released
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.
Subscribing...

Other bug subscribers

Remote bug watches

Bug watches keep track of this bug in other bug trackers.