What's the connector name when you plug in via, say, DVI? Is it "DP-1" or is it "DVI-D-1" or whatever? You should be able to see the name in 'xrandr'. Unfortunately I don't know how the T440p is wired, there are a few ways it could go. In some cases, even the "VGA" port is secretly a DP -> VGA active adapter inside the laptop.
Basically I'm trying to rule DisplayPort as a source of potential issues. -ilia On Tue, Jun 18, 2019 at 4:12 PM Harald Harders <harald.hard...@gmx.de> wrote: > > Hi Ilia, > > First I had upgraded from OpenSUSE 13.2 (where it worked) to OpenSUSE Leap > 15.1. After having the same issue I have done a clean new install. The new > kernel version is 4.12.14, as you suspected. In OpenSUSE, I suspect it was > version 3.16.7. Unfortunately, I cannot find out anymore which nouveau > version I have used before. I have a file backup of the old installation. Can > I find out which nouveau version I had before? > > During all my attempts, I have also installed Ubuntu 18.04.2 with the same > strange behaviour. I guess this was the 4.18 kernel version? > Do you know which distrubtion already uses a 5.0 kernel? I will try a live > system, then. > > I have a docking station with 4 monitor ports: VGA, DVI, HDMI, Displayport. > And my laptop has VGA and Mini-Displayport. My monitor (Fujitsu P24W-7 LED) > has VGA, DVI, HDMI, and Displayport. > I have tried DVI->DVI and DisplayPort->HDMI cable on the docking station (I > don't hav. In one of my attempts, I have connected the screen via analog VGA > cable directly to the computer. The same effect resulted. Thus, I believe the > docking station and digital connection to the monitor are not part of the > problem. > > Best regards > Harald > > PS: I guess sending to the mailing list and omitting your personal mail > address is correct, right? > > > Gesendet: Dienstag, 18. Juni 2019 um 21:36 Uhr > Von: "Ilia Mirkin" <imir...@alum.mit.edu> > An: "Harald Harders" <harald.hard...@gmx.de> > Cc: nouveau <nouveau@lists.freedesktop.org> > Betreff: Re: [Nouveau] Instable graphics with GeForce GT 730M, especially on > external monitor > Which kernel did you update from and to? Also, 4.12 is fairly old - > can you try like a live usb image of some distro with e.g. a 5.0 > kernel or something? > > How do you connect the external screen? Is it like a DP port with an > optional dock with a variety of active DP adapters? Or is there a DP++ > port that you're plugging a DP <-> HDMI passive adapter into? > > On Tue, Jun 18, 2019 at 3:28 PM Harald Harders <harald.hard...@gmx.de> wrote: > > > > Dear all, > > > > I have recently updated my Lenovo T440p with a dual graphics card (Intel > > Core + GeForce GT 730M) to OpenSUSE Leap 15.1. Since then, the external > > screen (connected either via VGA, DVI, HDMI, or DisplayPort) has a > > vertically stretched output which jumps horizontally in high frequency. > > Whenever touching any settings for the built in display (e.g. by > > gnome-control-center), also this screen starts incorrect display. > > Sometimes, however, also the external screen works as expected. > > > > Installed driver version is (only 2D installed): > > xf86-video-nouveau: 1.0.15-lp151.4.1 > > libvdpau_nouveau: 18.3.2-lp151.22.4 > > libdrm_nouveau2: 2.4.97-lp151.1.1 > > > > I have followed your instructions on the TroubleShooting page, No signs for > > NVIDIA drivers running, everything appears to be okay. Minimal xorg.conf > > did not work, screenshots are okay.Unfortunately, I failed in installing > > the most recent nouveau version (neither > > /lib/modules/4.12.14-lp151.28.4-default/source nor > > /lib/modules/4.12.14-lp151.28.4-default/build are present on my computer > > even though I have installed the Kernel sources). The installed version is > > still quite new, isn't it? > > > > I suspect that I might have the issue you describe under "Blank monitor, > > flicker, snow, or other random live image corruption". I would like to make > > sure, however. And since you warn with regards to potential permanent > > damage, I would like to make sure, first. > > Can you confirm that it should be this issue? Or are there any other things > > I should try first? > > > > Best regards > > Harald > > > > > > > > > > > > > > > > > > > > lose:/home/harders/download/nouveau/drm # lspci | grep -i vga > > 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor > > Integrated Graphics Controller (rev 06) > > 02:00.0 VGA compatible controller: NVIDIA Corporation GK208M [GeForce GT > > 730M] (rev a1) > > > > _______________________________________________ > > Nouveau mailing list > > Nouveau@lists.freedesktop.org > > https://lists.freedesktop.org/mailman/listinfo/nouveau > _______________________________________________ > Nouveau mailing list > Nouveau@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/nouveau _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
