This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 1651910
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.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: trusty
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https://bugs.launchpad.net/bugs/1651910
Title:
radeon: black screen after upgrade from 14.04 to 16.04 on RS780
Status in linux package in Ubuntu:
Incomplete
Bug description:
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
$ 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
linux-image-4.4.0-57-generic:
Installed: 4.4.0-57.78
Candidate: 4.4.0-57.78
Version table:
*** 4.4.0-57.78 500
500 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu xenial-security/main amd64
Packages
100 /var/lib/dpkg/status
3) What you expected to happen
Screen doesn't stay black
4) What happened instead
Screen stays black
---
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
CurrentDesktop: KDE
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
PackageArchitecture: amd64
Tags: xenial
Uname: Linux 3.14.79-031479-generic x86_64
UpgradeStatus: Upgraded to xenial on 2016-09-24 (88 days ago)
UserGroups: adm admin cdrom dialout lpadmin nopasswdlogin plugdev sambashare
_MarkForUpload: True
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