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Message #125115
[Bug 754284] Re: Modeset code fixed with update in 10.10 regressed in 11.04
apport information
** Tags added: apport-collected natty ubuntu
** Description changed:
This problem was fixed in 10.10 with an update. While not using nomodeset, sometime incorrect commands would be sent to the display causing errors such as entering low-power mode, flickering or simply going blank. In particular, my Samsung television enters a standby mode that is otherwise inaccessible by the consumer. It turns on and off repeatedly as a result of a command being sent by the display driver. Honestly, I didn't know it was possible, but you may want to look at the fix for 10.10 as the solution for 11.04 and maybe exploit this error to gain a little more functionality of HDMI televisions.
I consider this bug a security vulnerability because it causes otherwise inaccessible functions of the display hardware to become accessible at the hardware level.
+ ---
+ Architecture: amd64
+ DistUpgraded: Fresh install
+ DistroCodename: natty
+ DistroRelease: Ubuntu 11.04
+ DistroVariant: ubuntu
+ LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
+ Package: xorg 1:7.6+4ubuntu3
+ PackageArchitecture: amd64
+ ProcEnviron:
+ LANGUAGE=en_US:en
+ PATH=(custom, no user)
+ LANG=en_US.UTF-8
+ SHELL=/bin/bash
+ ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
+ Tags: natty ubuntu
+ Uname: Linux 2.6.38-8-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups:
+
+ version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
+ version.ia32-libs: ia32-libs N/A
+ version.libdrm2: libdrm2 2.4.23-1ubuntu6
+ version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
+ version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
+ version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
+ version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
+ version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
+ version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
+ version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7
** Attachment added: "Dependencies.txt"
https://bugs.launchpad.net/bugs/754284/+attachment/2098657/+files/Dependencies.txt
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https://bugs.launchpad.net/bugs/754284
Title:
Modeset code fixed with update in 10.10 regressed in 11.04