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Description of problem: Version-Release number Description of problem: System booted to runlevel 5, with Xinerama enabled in Xorg.conf with either nvidia or nouveau driver gets stuck with blank screen. Tests are done with below mentioned cards: VGA compatible controller: NVIDIA Corporation GK107GL [Quadro K2000] (rev a1) VGA compatible controller [0300]: NVIDIA Corporation GK107 [GeForce GT 640] [10de:0fc1] (rev a1) (prog-if 00 [VGA controller]) VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2) Version-Release number of selected component (if applicable): gdm-3.26.2.1-5.el7 How reproducible: Always Steps to Reproduce: 1. On a system with nvidida card, configure X to enable Xinerama with nvidia/nouveau driver 2. Boot the system to runlevel 5 Actual results: It never presents a login screen, instead presents a blank screen. Expected results: Botted in runlevel 5, it should prompt login screen to allow user to initiate session. Additional info: We test this on both Fedora 27 and Fedodar 28 as well but no luck, still the same result. of selected component (if applicable):
I missed an important piece of information here, i.e With LightDM all worked as expected with Xinerama enabled.
could it be, that your monitors.xml file is not setup correctly to end up having your login screen on the wrong display ? Once you logged into your gdm session, configure your monitor setup and copy the monitors.xml file : cp ~/.config/monitors.xml /var/lib/gdm/.config/ I had the same problem and this fixed it.
I have a scratch build for 7.5 that tries to somewhat handle the lack of RANDR support in the X server by assuming the whole screen is a single dummy monitor. I can start GNOME Shell with this on a dual monitor setup and it'll work as if all connected monitors were just a single one. Naturally monitor configuration does no longer work with this. Is this something that would work for the customer? The scratch build is available here: http://brew-task-repos.usersys.redhat.com/repos/scratch/jadahl/mutter/3.26.2/18.el7_5/
A scratch build for 7.6 available here: http://brew-task-repos.usersys.redhat.com/repos/scratch/jadahl/mutter/3.28.3/5.el7/
Created attachment 1490887 [details] Mutter patches for rhel 7.5
Created attachment 1490888 [details] Mutter patches for rhel 7.6
Here is another scratch build for 7.5. I have tested this on a system with nvidia, with two (separate) monitors using a config similar to the ones in the sosreports. The previous version did indeed crash when using the nvidia driver, but not in the driver as reported reported above, so I cannot verify the same crash is fixed. The new coredump tarball also seems to not have contained any mutter or gnome-shell backtraces, so if the new scratch build still causes a crash, it'd be very useful to have the whole backtrace leading up to the crash. Here is the new scratch build: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=18723238
Feedback from the customer with latest scratch build ******* THAT WORKED!!!!!! I did see some core dumps. I didn't always get them when I booted up but I did get a few. They are attached. I tested with Xinerama disabled and enabled, both with 1 screen attached and 2 screens attached. It worked as desired in all 4 cases, but most importantly it worked in the desired case of 2 screens attached with Xinerama enabled. ******* In the attached coredumps, I see, two of them belongs to gnome-shell.
Great, thanks a lot for testing!