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Message #55948
[Bug 534677] Re: [lucid] Broken backlight control with Radeon open-source drivers
** Description changed:
Binary package hint: gnome-power-manager
With the deprecation of hal, gnome-power-manager must rely on the
BACKLIGHT property in xrandr; however, the ATI open-source drivers seem
not to support this property (regardless of whether KMS is enabled).
With HAL removed, g-p-m does not offer brightness controls at all.
Additionally, even if I reinstall HAL, the backlight control still does
not work -- upon pressing the brightness control keys, notify-OSD shows
the slider at a fixed value, but the slider does not move.
I have attached (originally to bug 38057915 ) a log of gnome-power-
manager --verbose: http://launchpadlibrarian.net/38057915/g-p-m.log --
Note that gnome-power-manager seems to be repeatedly setting the same
brightness level with each keypress.
The Gnome brightness panel applet also behaves strangely: sometimes it
works, and sometimes it displays "Cannot get laptop panel brightness".
I am using Lucid with xorg-edgers, currently booted into kernel-ppa
2.6.33, but this issue also occurs with normal Lucid packages.
ProblemType: Bug
Architecture: amd64
Date: Mon Mar 8 13:17:10 2010
DistroRelease: Ubuntu 10.04
Package: gnome-power-manager 2.29.91-0ubuntu4
ProcEnviron:
PATH=(custom, user)
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: gnome-power-manager
Uname: Linux 2.6.33-996-generic x86_64
---
Architecture: amd64
DistroRelease: Ubuntu 10.04
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GnomeSessionSuspendInhibited: No
MachineType: Hewlett-Packard HP EliteBook 8530w
Package: xserver-xorg-video-ati 1:6.12.191+git20100314.67e81c8f-0ubuntu0sarvatt
PackageArchitecture: amd64
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.33-996-generic root=UUID=538e1c30-c976-4363-ae30-eaaa7704dbe0 ro vga16fb.DoNotWant=1 acpi_osi="!Windows 2009" pciehp.pciehp_debug=1 console=ttyS0,115200 console=tty0 radeon.dynclks=1 radeon.modeset=1 radeon.dynpm=1 quiet splash
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
Tags: lucid lucid
Uname: Linux 2.6.33-996-generic x86_64
UnreportableReason: This is not a genuine Ubuntu package
UserGroups: adm admin cdrom dialout lpadmin netdev plugdev sambashare vboxusers
dmi.bios.date: 12/08/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PDV Ver. F.11
dmi.board.name: 30E7
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 90.26
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PDVVer.F.11:bd12/08/2009:svnHewlett-Packard:pnHPEliteBook8530w:pvrF.11:rvnHewlett-Packard:rn30E7:rvrKBCVersion90.26:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP EliteBook 8530w
dmi.product.version: F.11
dmi.sys.vendor: Hewlett-Packard
system:
distro: Ubuntu
codename: lucid
architecture: x86_64
kernel: 2.6.33-996-generic
+
+
+ [lspci]
+ 00:00.0 Host bridge [0600]: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub [8086:2a40] (rev 07)
+ Subsystem: Hewlett-Packard Company Device [103c:30e7]
+ 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Mobility Radeon HD 3650 [1002:9591]
+ Subsystem: Hewlett-Packard Company Device [103c:3604]
--
[lucid] Broken backlight control with Radeon open-source drivers
https://bugs.launchpad.net/bugs/534677
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