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
