This bug was nominated against a series that is no longer supported, ie
artful. The bug task representing the artful nomination is being closed
as Won't Fix.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu Artful)
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/1742602
Title:
Blank screen when starting X after upgrading from 4.10 to 4.13.0-26
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Artful:
Won't Fix
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-image-generic-hwe-16.04 4.13.0.26.46
xserver-xorg-hwe-16.04 1:7.7+16ubuntu3~16.04.1
xserver-xorg-video-intel-hwe-16.04 2:2.99.917+git20170309-0ubuntu1~16.04.1
xserver-xorg-video-fbdev-hwe-16.04 1:0.4.4-1build6~16.04.1
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).
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