After upgrading from Ubuntu 14.04 to 16.04, the screen will stay black after GRUB (backlight is on) when booting with the new 4.4 kernel (linux-image-4.4.0-57-generic). Booting with the old 3.14 kernel will make the screen work again.
This is on a BIOSTAR A780L mainboard, with the monitor connected via DVI.
"ubuntu-bug linux" tells me that I appear to run a mainline kernel and cannot report anything (obviously, as the screen doesn't work if I boot the 16.04 kernel).
$ cat /proc/version_signature > version.log
cat: /proc/version_signature: No such file or directory
1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu
After upgrading from Ubuntu 14.04 to 16.04, the screen will stay black after GRUB (backlight is on) when booting with the new 4.4 kernel (linux- image-4. 4.0-57- generic) . Booting with the old 3.14 kernel will make the screen work again.
This is on a BIOSTAR A780L mainboard, with the monitor connected via DVI.
"ubuntu-bug linux" tells me that I appear to run a mainline kernel and cannot report anything (obviously, as the screen doesn't work if I boot the 16.04 kernel).
$ cat /proc/version_ signature > version.log signature: No such file or directory
cat: /proc/version_
1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu
$ lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04
2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
$ apt-cache policy linux-image- 4.4.0-57- generic 4.4.0-57- generic: de.archive. ubuntu. com/ubuntu xenial-updates/main amd64 Packages security. ubuntu. com/ubuntu xenial- security/ main amd64 Packages dpkg/status
linux-image-
Installed: 4.4.0-57.78
Candidate: 4.4.0-57.78
Version table:
*** 4.4.0-57.78 500
500 http://
500 http://
100 /var/lib/
3) What you expected to happen
Screen doesn't stay black
4) What happened instead
Screen stays black