Blank screen when starting X after upgrading from 4.10 to 4.13.0-26
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
Unassigned | ||
Artful |
Won't Fix
|
High
|
Unassigned |
Bug Description
I'm following the HWE kernels in Ubuntu 16.04, so my kernel was upgraded today from 4.10.0-42 to 4.13.0-26. After rebooting, the splash screen and disk encryption passphrase prompt showed correctly, but when X started, the screen went blank. Logs showed everything running as normal despite the blank screen. Rebooting with the "nomodeset" kernel parameter fixed the issue but is not suitable as a permanent workaround since it disables my external monitor. Rebooting back into 4.10 also fixed the issue.
I am using a ThinkPad X240 laptop, current HWE X.org packages. I tried both intel and fbdev X drivers, both gave a blank screen.
lsb_release: Ubuntu 16.04.3 LTS
dpkg-query -W:
linux-signed-
xserver-
xserver-
xserver-
In Xorg.0.log with fbdev, I saw:
[ 23.646] (EE) FBDEV(0): FBIOPUTCMAP: Invalid argument
repeated 239 times.
Typical kernel messages attached (from kern.log, reformatted to look like dmesg).
Changed in linux (Ubuntu): | |
status: | In Progress → Incomplete |
Changed in linux (Ubuntu Artful): | |
status: | In Progress → Incomplete |
Changed in linux (Ubuntu): | |
status: | Incomplete → Fix Released |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1742602
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.