[opensuse-kde] TW: Display flickering…
Since one of the TW updates in December the display flickers immediately after logging into my Plasma session (not before) on my machine with an Intel Haswell Xeon. Switching off hardware acceleration (Shift-Alt-F12) gets me a stable picture, so something is wrong with that part of the graphics stack. In December, switching back to hardware acceleration after a while would work without the problem returning. After another update yesterday that didn't work anymore. I've tried to switch the renderer from OpenGL2.0 to OpenGL3.1 without success. Switching off tearing prevention seems to have resolved it (regardless of rendering backend), but I don't know what will happen after another round of reboot. Did anyone experience the same or similar problems and have any hints on what else to check? Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Wavetables for the Terratec KOMPLEXER: http://Synth.Stromeko.net/Downloads.html#KomplexerWaves -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
On Sat, Jan 5, 2019 at 11:41 PM Achim Gratz
Since one of the TW updates in December the display flickers immediately after logging into my Plasma session (not before) on my machine with an Intel Haswell Xeon. Switching off hardware acceleration (Shift-Alt-F12) gets me a stable picture, so something is wrong with that part of the graphics stack. In December, switching back to hardware acceleration after a while would work without the problem returning. After another update yesterday that didn't work anymore. I've tried to switch the renderer from OpenGL2.0 to OpenGL3.1 without success. Switching off tearing prevention seems to have resolved it (regardless of rendering backend), but I don't know what will happen after another round of reboot.
Did anyone experience the same or similar problems and have any hints on what else to check?
Regards, Achim. --
Hi, Sounds like Intel driver issue. Try to add xorg configuration and see if it helps. You can just create a file like 20-intel.conf on /etc/X11/xorg.conf.d Section "Device" Identifier "Intel Graphics" Driver "intel" Option "AccelMethod" "sna" Option "TearFree" "true" Option "DRI" "3" EndSection And login again, or mightbe reboot. Best, -- Edwin -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
medwinz writes:
Sounds like Intel driver issue. Try to add xorg configuration and see if it helps.
You can just create a file like 20-intel.conf on /etc/X11/xorg.conf.d
Section "Device" Identifier "Intel Graphics" Driver "intel" Option "AccelMethod" "sna" Option "TearFree" "true" Option "DRI" "3" EndSection
And login again, or mightbe reboot.
Is there another way than looking at Xorg.0.log to figure out what the _current_ settings are? I think that "sna" is the default and active, I can't figure out if DRI is 2 or 3 (both modules are available, but only DRI2 has produced messages). Indeed TearFree seems to be false with the default config. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ SD adaptations for Waldorf Q V3.00R3 and Q+ V3.54R2: http://Synth.Stromeko.net/Downloads.html#WaldorfSDada -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
There was a thread about such problems on the opensuse-factory mailinglist in December. Uninstalling the intel driver and using modesetting instead seemed to help. That driver is not really supported anymore AIUI. Kind Regards, Wolfgang -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
PS: see also http://bugzilla.opensuse.org/show_bug.cgi?id=1120172 (there are a few more bug reports as well I think) One note though: If you do try to uninstall xf86-video-intel, you should also remove the 20-intel.conf that sets intel as driver, otherwise X will not start (as it cannot load the forced driver). Kind Regards, Wolfgang -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
Wolfgang Bauer writes:
One note though: If you do try to uninstall xf86-video-intel, you should also remove the 20-intel.conf that sets intel as driver, otherwise X will not start (as it cannot load the forced driver).
Hmm. Which directory is this supposed to be in? I don't have it in /etc/X11/xorg.conf.d it seems. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Samples for the Waldorf Blofeld: http://Synth.Stromeko.net/Downloads.html#BlofeldSamplesExtra -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
Achim Gratz composed on 2019-01-05 14:38 (UTC-0500):
Wolfgang Bauer writes:
One note though: If you do try to uninstall xf86-video-intel, you should also remove the 20-intel.conf that sets intel as driver, otherwise X will not start (as it cannot load the forced driver).
Hmm. Which directory is this supposed to be in? I don't have it in
/etc/X11/xorg.conf.d
For upstream purposes that's actually an optional directory. openSUSE includes it by default. If you examine its contents you should find a lot of what it contains is comments. If 20-intel.conf isn't there, it was never needed. In any event, Haswell users don't need xf86-video-intel, which last had an upstream release in 2015. https://cgit.freedesktop.org/xorg/driver/xf86-video-intel/ -- Evolution as taught in public schools is religion, not science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/ -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
Achim Gratz writes:
Wolfgang Bauer writes:
One note though: If you do try to uninstall xf86-video-intel, you should also remove the 20-intel.conf that sets intel as driver, otherwise X will not start (as it cannot load the forced driver).
Hmm. Which directory is this supposed to be in? I don't have it in
/etc/X11/xorg.conf.d
it seems.
Couldn't find it anywhere, so I just de-installed the driver and restarted X11. THere is a warning in Xorg.0.log about a missing intel driver, which didn't seemed to have disturbed loading the modeset driver. I have re-enabled vsync in the system settings for Plasma, so far so good (I've not yet rebooted, but I expect there to be no further problem). Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ SD adaptation for Waldorf Blofeld V1.15B11: http://Synth.Stromeko.net/Downloads.html#WaldorfSDada -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
Am Samstag, 5. Januar 2019, 21:13:01 schrieb Achim Gratz:
Achim Gratz writes:
Hmm. Which directory is this supposed to be in? I don't have it in
/etc/X11/xorg.conf.d
it seems.
No, it's not there by default. It will only be there if you created it yourself. But medwinz suggested to create one in his reply, so I thought I'd better mention it.
THere is a warning in Xorg.0.log about a missing intel driver, which didn't seemed to have disturbed loading the modeset driver.
That's normal, and just how Xorg's driver auto-detection works. It will try to load a few depending on the graphics card(s) installed, and then use the first one that was loaded successfully. If one from the list cannot be loaded, you'll get a message in the log, but that's harmless. Also happens on nvidia and radeon cards when the proprietary driver is not installed. (and/or radeon/nouveau) Kind Regards, Wolfgang -- To unsubscribe, e-mail: opensuse-kde+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kde+owner@opensuse.org
participants (4)
-
Achim Gratz -
Felix Miata -
medwinz -
Wolfgang Bauer