Red Hat Bugzilla – Bug 593741
Regression: Login screen not visible on multimonitor laptop
Last modified: 2018-04-11 06:12:58 EDT
Description of problem:
This was an issue I had with earlier versions of F12 that was eventually fixed. F13 reintroduces the issue. Have a Lenovo X200 laptop with an external VGA and external Displayport monitor attached (dual head config). At login, the login screen is not visible/corrupted. You have to enter the password blind. After login, screens display correctly.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Reboot or log off
2. Try to log on
During reboot, only the Displayport screen shows any picture (VGA is no-signal). When reboot is complete, Displayport goes to no signal. VGA screen shows a corrupted slice of the login screen squashed to the left 1/3 of the screen. You can't see the login dialog box, so you have to blindly hit enter and enter the password. If something goes wrong, you can't tell.
Once the login is accepted, both monitors have picture an appear normally.
When this was fixed in F12, during reboot both screens (VGA and Displayport) would mirror each other, and show full picture throughout reboot process. At login, the primary screen (Displayport) would show the login screen in full so you could see the primary username and choose another if you wanted. Once login was complete, you would see both screens normally.
My colleague has similar problem with his laptop and an external monitor, so I
will answer those questions:
$ cat /etc/X11/xorg.conf
cat: /etc/X11/xorg.conf: No such file or directory
other files will follow.
Created attachment 430348 [details]
Created attachment 430349 [details]
Created attachment 430350 [details]
output of dmesg
Created attachment 430351 [details]
*** Bug 650368 has been marked as a duplicate of this bug. ***
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