Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-ati (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1411300
Title:
Radeon flickering line after sleep
Status in xserver-xorg-video-ati package in Ubuntu:
Confirmed
Bug description:
Since Ubuntu 14.10, no matter what DE or version of Ubuntu (Xubuntu,
Kubuntu), after sleep there is a flickering line at the bottom of my
screen. For Kubuntu, it can be prevented by simply requiring a
password after resume. For Unity, running "unity --replace" works as
a workaround, and for Xubuntu, it's random as to whatever fixes it or
not.
It has been an annoyance, but I don't want to go back to an earlier
version of Ubuntu, as the Radeon driver in 14.10, actually now allows
me to use WebGL in Chrome, and things like Google Maps.. (it was a
big problem as the previous radeon driver had a lot of bugs on this
GPU, most of which were in fact fixed). I also can't use FGLRX,
because for whatever reason, it is actually slower than Ubuntu 14.10's
included open source driver (weird, I know, right?) The driver is
generally perfect, except this problem with the flickering line. I am
using the VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Seymour [Radeon HD 6400M/7400M Series].
Please assist, because this is a laptop, and can't just change
graphics cards (I would if it was the solution though), and well,
hitting hard times, so switching laptops isn't a choice. Besides,
it's only 3 years old and still does everything I need done.
I made a video demonstrating the flickering line at the bottom of the
screen on resume from sleep. Sometimes videos explain things better
than words: https://www.youtube.com/watch?v=V-t3K95g898
I would also like to add that I have completely reformatted the hard
drive and reinstalled many other versions of Ubuntu, to find that
14.10 literally is the only one having this issue.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2
Uname: Linux 3.16.0-29-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: KDE
Date: Thu Jan 15 11:05:03 2015
InstallationDate: Installed on 2015-01-05 (10 days ago)
InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: xserver-xorg-video-ati
UpgradeStatus: No upgrade log present (probably fresh install)
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