Ilia Mirkin <imirkin@xxxxxxxxxxxx> writes: > On Sat, Feb 16, 2019 at 12:49 PM Dan Espen <dan1espen@xxxxxxxxx> wrote: >> >> Dan Espen <dan1espen@xxxxxxxxx> writes: >> >> > Ilia Mirkin <imirkin@xxxxxxxxxxxx> writes: >> > >> >> On Wed, Feb 6, 2019 at 3:28 PM Dan Espen <dan1espen@xxxxxxxxx> wrote: >> >>> >> >>> Ilia Mirkin <imirkin@xxxxxxxxxxxx> writes: >> >>> >> >>> > It would be useful to know how the screen is connected. Also please >> >>> > grab the monitor's EDID from /sys/class/drm/cardN-connector/edid and >> >>> > attach it here. It would also be interesting to get a boot with >> >>> > "drm.debug=0x1e nouveau.debug=disp=trace" which has the modeswitch in >> >>> > question. >> >>> >> >>> The screen is connected using the MDP port. >> >>> I don't find any cardN-connector directory, >> >>> the closest match is: >> >>> >> >>> /sys/class/drm/card0-DP-1/edid >> >> >> >> N = 0 >> >> connector = DP-1 >> >> >> >> so looks like you found it. >> >> >> >> I was actually looking for dmesg with those boot parameters, not the Xorg log. >> >> >> >> Something to randomly try -- xrandr -s 640x480 -r 75 -- perhaps it'll >> >> like that mode better. >> > >> > Using "-r 75" fixes the problem. >> > >> >> Also does 720x480 work better? >> > >> > Yes, 720x480 works without the -r parameter. >> > >> >> Looking at your EDID, you have: >> >> >> >> Established timings supported: >> >> 720x400@70Hz 9:5 HorFreq: 31469 Hz Clock: 28.320 MHz >> >> 640x480@60Hz 4:3 HorFreq: 31469 Hz Clock: 25.175 MHz >> >> 640x480@75Hz 4:3 HorFreq: 37500 Hz Clock: 31.500 MHz >> >> 800x600@60Hz 4:3 HorFreq: 37900 Hz Clock: 40.000 MHz >> >> 800x600@75Hz 4:3 HorFreq: 46900 Hz Clock: 49.500 MHz >> >> 1024x768@60Hz 4:3 HorFreq: 48400 Hz Clock: 65.000 MHz >> >> 1024x768@75Hz 4:3 HorFreq: 60000 Hz Clock: 78.750 MHz >> >> 1280x1024@75Hz 5:4 HorFreq: 80000 Hz Clock: 135.000 MHz >> >> Standard timings supported: >> >> 1920x1080@60Hz 16:9 >> >> 1600x1200@60Hz 4:3 HorFreq: 75000 Hz Clock: 162.000 MHz >> >> 1280x1024@60Hz 5:4 HorFreq: 64000 Hz Clock: 108.000 MHz >> >> 1280x800@60Hz 16:10 >> >> 1152x864@75Hz 4:3 HorFreq: 67500 Hz Clock: 108.000 MHz >> >> >> >> CTA extension block >> >> Extension version: 3 >> >> 25 bytes of CTA data >> >> Video data block >> >> ... >> >> VIC 3 720x480@60Hz 16:9 HorFreq: 31469 Hz Clock: 27.000 MHz >> >> VIC 2 720x480@60Hz 4:3 HorFreq: 31469 Hz Clock: 27.000 MHz >> >> VIC 1 640x480@60Hz 4:3 HorFreq: 31469 Hz Clock: 25.175 MHz >> > >> > Okay, if I read all that right the EDID supports 640x480 at 60 and 75hz. >> > The monitor acts strangely at 60hz but is okay at 75hz. >> > Is this something I should configure or can nouveau figure out the best mode? >> >> Okay, looks like I'm moving back to the Nvidia proprietary drivers until >> at least this issue is fixed. >> >> So, I'd like to file a bug report but I tried here: >> >> https://bugs.freedesktop.org/enter_bug.cgi >> >> and my mailing list userid/password don't work there. >> >> So, could someone give me guidance on filing the bug report or file one >> on my behalf? >> >> It looks like the issue is, when switching modes, if there are multiple >> matches on the resolution, Nouveau should pick the mode with the >> highest frequency. > > I don't know if that's the right policy. Either way, nouveau is not > responsible for things like that ... it just does what it's told. Why > doesn't the 60hz mode work? I don't know why 60hz doesn't work. It displays text but doesn't fill the screen vertically. I don't know for sure that nouveau is to blame, but I do know that the NVIDIA drivers on the same hardware do the right thing. > Is NVIDIA's driver able to drive the monitor at 640x480@60? If so, we > should figure out what the difference is. As far as I can tell, NVIDIA is driving the monitor at 640x480@75. I'm working on getting the NVIDIA driver working again, I'll see if I can find the frequency when I'm done. Mainly what I see is that Nouveau gives me an unusable 640x480, NVIDIA gives me a workable 640x480. > As for filing bugs, bugzilla is separate from mailman. Okay, got a bug report filed. -- Dan Espen _______________________________________________ Nouveau mailing list Nouveau@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/nouveau
