Does disabling pageflipping via the xorg.conf help? Alex On Wed, Mar 31, 2021 at 1:40 PM Christian König <christian.koenig@xxxxxxx> wrote: > > Yeah, agree that must be some kind of bug in the upper layer of the stack. > > Most likely some userspace component is not handling the specialties of interlacing correctly (different vblank timing every other frame). > > It probably only works on Intel and after restarting the display manager by coincident. > > Sorry, but as I said this is a use case which basically nobody is using any more and because of this the different parts of the stack are not tested well enough for this. > > Christian. > > Am 31.03.21 um 17:47 schrieb Alberto Salvia Novella: > > Restarting the display manager service works and, more importantly, makes the bug no longer reproducible. > > Restarting the window manager doesn't work. > > Changing display manager makes the bug still reproducible. > > Maybe this is due to xorg-server, isn't it? > > On Wed, 31 Mar 2021 at 16:55, Christian König <ckoenig.leichtzumerken@xxxxxxxxx> wrote: >> >> Well the hardware is working fine as far as I can see. >> >> Can you try to kill the X server over SSH and see if you then get some screen update? >> >> Regards, >> Christian. >> >> Am 31.03.21 um 16:52 schrieb Alberto Salvia Novella: >> >> Output. >> >> On Wed, 31 Mar 2021 at 16:36, Christian König <christian.koenig@xxxxxxx> wrote: >>> >>> Mhm strange. >>> >>> Can you get me the output of "sudo cat /sys/kernel/debug/dri/0/radeon_fence_info" when the problem happens? >>> >>> Thanks, >>> Christian. >>> >>> Am 31.03.21 um 16:33 schrieb Alberto Salvia Novella: >>> >>> - The computer still replies to ping. >>> - The journal shows no errors, but a few warnings. >>> - The mouse doesn't freeze. >>> >>> On Wed, 31 Mar 2021 at 10:09, Christian König <christian.koenig@xxxxxxx> wrote: >>>> >>>> Can you access the system over the network and see if there is anything in the system log? >>>> >>>> It sounds like the display stack has crashed, but when the sound keeps playing the system is most likely still responsive over network. >>>> >>>> Thanks, >>>> Christian. >>>> >>>> Am 31.03.21 um 10:05 schrieb Alberto Salvia Novella: >>>> >>>> What happens is this simple: after a few minutes, about 6 or so, the entire content of the screen stays still. In some minor situations only the applications panel of KDE Plasma. >>>> >>>> If music is playing it continues playing, so only graphics are hung. Yet in most cases the power button won't shut down the computer, as it usually does. >>>> >>>> At least this is the case using kwin on x11, and not on wayland. It only happens on "radeon" and not on Intel or "radeonhd". >>>> >>>> On Wed, 31 Mar 2021 at 09:48, Christian König <christian.koenig@xxxxxxx> wrote: >>>>> >>>>> Correct, but a TV is intended for videos only. That's why it implements only the lower HDMI standard. >>>>> >>>>> Interlaced transmits only halve the lines with each frame, so a 60Hz mode effectively either becomes a 30Hz mode, halving the vertical resolution or adaptive motion compensated which the know visual artifacts. Depending on what the deinterlacing setting on your TV is. >>>>> >>>>> You could just add a progressive 1920x540@60 or 1920x1080@30 mode manually and would have the same effect with probably better quality. See https://de.wikipedia.org/wiki/Deinterlacing for reference. >>>>> >>>>> If you can give us some more information what is happening when the system freeze we could try to narrow this down, but we can't spend much time on a very specific use case in a driver which is in maintenance mode. >>>>> >>>>> Regards, >>>>> Christian. >>>>> >>>>> Am 31.03.21 um 09:21 schrieb Alberto Salvia Novella: >>>>> >>>>> 24fps is intended for video only. Anything interactive at 24fps, as just moving the mouse around, is extremely choppy. >>>>> >>>>> No way anyone would prefer that over an interlaced resolution or a lower resolution. That is, by far, the worst option. >>>>> >>>>> Just try it on your screen, set it to 24Hz or alike, and tell me your experience. You can't even tell where the mouse is going to go. >>>>> >>>>> On Wed, 31 Mar 2021 at 08:44, Christian König <christian.koenig@xxxxxxx> wrote: >>>>>> >>>>>> Hi Alberto, >>>>>> >>>>>> well a frame rate of 24Hz is perfectly reasonable for a TV and desktop usage. >>>>>> >>>>>> This is probably caused by the TVs limited HDMI bandwidth and a refresh rate of 30/25 Hz for the interlaced mode isn't much better either. >>>>>> >>>>>> Regards, >>>>>> Christian. >>>>>> >>>>>> Am 30.03.21 um 22:59 schrieb Alberto Salvia Novella: >>>>>> >>>>>> The frame-rate at 24Hz is extremely poor for normal desktop usage. >>>>>> >>>>>> If the highest resolution, aka 1080p, uses that refresh rate then the desktop will default to that frame-rate. >>>>>> >>>>>> Other progressive modes don't exhibit any issue. >>>>>> >>>>>> On Tue, 30 Mar 2021 at 18:26, Christian König <christian.koenig@xxxxxxx> wrote: >>>>>>> >>>>>>> Hi Alberto, >>>>>>> >>>>>>> I think the driver should only support resolutions that are progressive, but also at least of 50Hz. >>>>>>> >>>>>>> >>>>>>> Why do you think so?, the 24Hz resolution seems to be the native one of the display. >>>>>>> >>>>>>> Regards, >>>>>>> Christian. >>>>>>> >>>>>>> Am 30.03.21 um 17:37 schrieb Alberto Salvia Novella: >>>>>>> >>>>>>> This is why I'm using interlaced: >>>>>>> >>>>>>> $ xrandr >>>>>>> Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 >>>>>>> DisplayPort-0 disconnected (normal left inverted right x axis y axis) >>>>>>> HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 16mm x 9mm >>>>>>> 1920x1080i 60.00*+ 50.00 59.94 >>>>>>> 1920x1080 24.00 23.98 >>>>>>> 1280x720 60.00 50.00 59.94 >>>>>>> 1024x768 75.03 70.07 60.00 >>>>>>> 832x624 74.55 >>>>>>> 800x600 72.19 75.00 60.32 56.25 >>>>>>> 720x576 50.00 >>>>>>> 720x576i 50.00 >>>>>>> 720x480 60.00 59.94 >>>>>>> 720x480i 60.00 59.94 >>>>>>> 640x480 75.00 72.81 66.67 60.00 59.94 >>>>>>> 720x400 70.08 >>>>>>> DVI-0 disconnected (normal left inverted right x axis y axis) >>>>>>> >>>>>>> I think the driver should only support resolutions that are progressive, but also at least of 50Hz. >>>>>>> >>>>>>> On Tue, 30 Mar 2021 at 15:41, Christian König <ckoenig.leichtzumerken@xxxxxxxxx> wrote: >>>>>>>> >>>>>>>> Mhm, no idea why an interlaced resolution would cause a crash. Maybe some miscalculation in the display code. >>>>>>>> >>>>>>>> But apart from that if you just connected your PC to a TV I also wouldn't recommend using an interlaced resolution in the first place. >>>>>>>> >>>>>>>> See those resolutions only exists for backward compatibility with analog hardware. >>>>>>>> >>>>>>>> I think we would just disable those modes instead of searching for the bug. >>>>>>>> >>>>>>>> Regards, >>>>>>>> Christian. >>>>>>>> >>>>>>>> Am 30.03.21 um 11:07 schrieb Alberto Salvia Novella: >>>>>>>> >>>>>>>> I guessed so. >>>>>>>> >>>>>>>> The GPU is a Radeon HD5870, and the screen is an old Telefunken TV (TLFK22LEDPVR1). >>>>>>>> >>>>>>>> Since my real display got into repair I used this TV meanwhile, and to my surprise it froze the system. >>>>>>>> >>>>>>>> On Tue, 30 Mar 2021 at 10:15, Christian König <christian.koenig@xxxxxxx> wrote: >>>>>>>>> >>>>>>>>> Hi Alberto, >>>>>>>>> >>>>>>>>> well what hardware do you have? >>>>>>>>> >>>>>>>>> Interlaced resolutions are not used any more on modern hardware, so they >>>>>>>>> are not well tested. >>>>>>>>> >>>>>>>>> Regards, >>>>>>>>> Christian. >>>>>>>>> >>>>>>>>> Am 30.03.21 um 10:04 schrieb Alberto Salvia Novella: >>>>>>>>> > The entire desktop hangs after some minutes when using the module >>>>>>>>> > "radeon" with an interlaced resolution. >>>>>>>>> > >>>>>>>>> > Easier to trigger by playing a video on Firefox, at least on kwin_x11. >>>>>>>>> > Wayland didn't exhibit the problem. >>>>>>>>> > >>>>>>>>> > Other display drivers, from different computers I have tried, didn't >>>>>>>>> > allow those interlaced resolutions all together. It seems they know >>>>>>>>> > there will be problems. >>>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> amd-gfx mailing list >>>>>>>> amd-gfx@xxxxxxxxxxxxxxxxxxxxx >>>>>>>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> > > _______________________________________________ > amd-gfx mailing list > amd-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
