| 2009-02-23 16:14:36 |
Marc-André Turcotte |
bug |
|
|
added bug |
| 2009-02-23 16:16:27 |
Marc-André Turcotte |
description |
Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. |
Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. |
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| 2009-03-07 22:22:03 |
Lödur |
None: bugtargetdisplayname |
Ubuntu |
linux (Ubuntu) |
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| 2009-03-07 22:22:03 |
Lödur |
None: bugtargetname |
ubuntu |
linux (Ubuntu) |
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| 2009-03-07 22:22:03 |
Lödur |
None: statusexplanation |
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|
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| 2009-03-07 22:22:03 |
Lödur |
None: title |
Bug #333386 in Ubuntu: "Cannot change brightness with 2.6.27-11+ kernel" |
Bug #333386 in linux (Ubuntu): "Cannot change brightness with 2.6.27-11+ kernel" |
|
| 2009-04-09 08:50:36 |
Stefan Bader |
linux (Ubuntu): importance |
Undecided |
Medium |
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| 2009-04-09 08:50:36 |
Stefan Bader |
linux (Ubuntu): status |
New |
Confirmed |
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| 2009-04-09 08:50:36 |
Stefan Bader |
linux (Ubuntu): assignee |
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stefan-bader-canonical |
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| 2009-04-09 13:57:15 |
Marc-André Turcotte |
attachment added |
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dmesg log http://launchpadlibrarian.net/25111461/dmesg |
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| 2009-05-13 14:53:45 |
Stefan Bader |
nominated for series |
|
Ubuntu Intrepid |
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| 2009-05-13 14:53:45 |
Stefan Bader |
nominated for series |
|
Ubuntu Jaunty |
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| 2009-05-13 15:05:22 |
Tim Gardner |
bug task added |
|
linux (Ubuntu Intrepid) |
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| 2009-05-13 15:05:32 |
Tim Gardner |
bug task added |
|
linux (Ubuntu Jaunty) |
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| 2009-05-13 15:48:36 |
Stefan Bader |
linux (Ubuntu Intrepid): importance |
Undecided |
Medium |
|
| 2009-05-13 15:48:36 |
Stefan Bader |
linux (Ubuntu Intrepid): status |
New |
Fix Committed |
|
| 2009-05-13 15:54:04 |
Stefan Bader |
linux (Ubuntu Jaunty): importance |
Undecided |
Medium |
|
| 2009-05-13 15:54:04 |
Stefan Bader |
linux (Ubuntu Jaunty): status |
New |
In Progress |
|
| 2009-05-13 15:54:22 |
Stefan Bader |
linux (Ubuntu Jaunty): assignee |
|
Stefan Bader (stefan-bader-canonical) |
|
| 2009-06-05 10:07:13 |
Martin Pitt |
tags |
backlight brightness |
backlight brightness verification-needed |
|
| 2009-06-10 13:46:03 |
gidantribal |
attachment added |
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dmesg.txt http://launchpadlibrarian.net/27728556/dmesg.txt |
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| 2009-06-10 13:46:40 |
gidantribal |
attachment added |
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acpi directories http://launchpadlibrarian.net/27728562/locate_acpi.txt |
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| 2009-06-10 13:47:06 |
gidantribal |
attachment added |
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'brightness' directories http://launchpadlibrarian.net/27728575/locate_brightness.txt |
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| 2009-06-10 23:59:43 |
gidantribal |
attachment added |
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Output from acpidump http://launchpadlibrarian.net/27762116/acpidump.txt |
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| 2009-06-26 15:01:06 |
gidantribal |
attachment added |
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AcpiDump output http://launchpadlibrarian.net/28417814/acpidump.txt |
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| 2009-07-02 13:55:51 |
gidantribal |
attachment added |
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Dmesg output http://launchpadlibrarian.net/28628061/output_dmesg.txt |
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| 2009-07-17 22:49:05 |
gidantribal |
attachment added |
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sudo lspci -vvvnn http://launchpadlibrarian.net/29207119/lspci |
|
| 2009-07-23 02:04:11 |
gidantribal |
attachment added |
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dmesg output http://launchpadlibrarian.net/29406868/dmesg.txt |
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| 2009-07-29 20:46:31 |
Marc-André Turcotte |
attachment added |
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demidecode.txt http://launchpadlibrarian.net/29678660/demidecode.txt |
|
| 2009-07-29 22:03:08 |
unclben |
removed subscriber unclben |
|
|
|
| 2009-07-30 10:00:44 |
Stefan Bader |
summary |
Cannot change brightness with 2.6.27-11+ kernel |
Acer: Cannot change brightness with 2.6.27-11+ kernel |
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| 2009-07-30 12:31:41 |
gidantribal |
attachment added |
|
dmidecode http://launchpadlibrarian.net/29713787/dmidecode |
|
| 2009-07-31 04:38:41 |
Steve Beattie |
tags |
backlight brightness verification-needed |
backlight brightness hw-specific verification-needed |
|
| 2009-08-27 21:26:29 |
gidantribal |
attachment added |
|
dmesg.txt http://launchpadlibrarian.net/30914639/dmesg.txt |
|
| 2009-08-31 14:20:00 |
Tim Gardner |
nominated for series |
|
Ubuntu Karmic |
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| 2009-08-31 14:20:00 |
Tim Gardner |
bug task added |
|
linux (Ubuntu Karmic) |
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| 2009-08-31 14:20:15 |
Tim Gardner |
linux (Ubuntu Karmic): status |
Confirmed |
Fix Committed |
|
| 2009-09-02 10:51:03 |
killo |
linux (Ubuntu Karmic): status |
Fix Committed |
Fix Released |
|
| 2009-09-02 10:51:08 |
killo |
linux (Ubuntu Karmic): status |
Fix Released |
Fix Committed |
|
| 2009-09-02 12:12:38 |
Stefan Bader |
linux (Ubuntu Jaunty): status |
In Progress |
Fix Committed |
|
| 2009-09-03 07:28:03 |
Martin Pitt |
tags |
backlight brightness hw-specific verification-needed |
backlight brightness hw-specific verification-done |
|
| 2009-09-08 08:49:07 |
Stefan Bader |
description |
Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. |
SRU justification:
Impact: After I carelessly pulled in some updates to the ACPI video code, we were faced with some regressions. One was (at least) a certain Acer laptop model that suddenly had no backlight control.
Fix: As the ACPI BIOS is broken on a way that only the *wrong* graphics definition will be accepted by acpi-video as the right definition lacks an attribute to be considered, the fix is to have less strict requirements to that check, so the definition for the right graphics device gets accepted (a patch doing that unconditionally, has been submitted upstream and has been acked, but might not make it until 2.6.32). For the stable tree I created more code which makes sure the less strict tests only take effect on that laptop or when the user really wants to.
Testcase: Booting on another laptop will not activate the code (which prints a "Using less strict video detection..." message) but will do with "acpi_video_strict_detect=0". In both cases nothing bad happened. The affected laptop boots and selects the new check which gives back the backlight control.
---
Since the 2.6.27-11 generic kernel (also in 2.6.27-12) I cannot change the backlight brightness anymore. In the latest kernel, it seems there's no more file in /proc/acpi/video, but GFX0 still apears in 2.6.27-9 where I can still change brightness. I'm new to linux so if you need information give me the command to run. It's an acer 6920G laptop. |
|
| 2009-09-08 08:51:59 |
Stefan Bader |
linux (Ubuntu Intrepid): status |
Fix Committed |
Won't Fix |
|
| 2009-09-08 12:30:07 |
Launchpad Janitor |
linux (Ubuntu Karmic): status |
Fix Committed |
Fix Released |
|
| 2009-09-14 13:52:08 |
Launchpad Janitor |
linux (Ubuntu Intrepid): status |
Won't Fix |
Fix Released |
|
| 2009-09-18 13:17:07 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/karmic/linux-fsl-imx51 |
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| 2009-09-29 08:48:26 |
Launchpad Janitor |
linux (Ubuntu Jaunty): status |
Fix Committed |
Fix Released |
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| 2009-10-09 22:18:09 |
Pablo |
attachment added |
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dm http://launchpadlibrarian.net/33378663/dm |
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| 2009-10-13 11:54:09 |
Pablo |
attachment added |
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grep http://launchpadlibrarian.net/33588369/grep |
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| 2009-11-17 15:54:09 |
Pablo |
attachment added |
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dmesg.log http://launchpadlibrarian.net/35786418/dmesg.log |
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| 2009-11-24 14:24:13 |
Pablo |
attachment added |
|
dmesg.log http://launchpadlibrarian.net/36020231/dmesg.log |
|
| 2010-06-18 23:26:09 |
Rogelio_Gitano |
linux (Ubuntu Intrepid): status |
Fix Released |
Fix Committed |
|
| 2010-06-18 23:26:14 |
Rogelio_Gitano |
linux (Ubuntu Intrepid): status |
Fix Committed |
Fix Released |
|
