** Changed in: acpi
Importance: Unknown => Medium
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https://bugs.launchpad.net/bugs/376924
Title:
Random reaction to brightness hotkeys
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** Changed in: acpi
Status: Incomplete => Fix Released
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Random reaction to brightness hotkeys
https://bugs.launchpad.net/bugs/376924
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** Changed in: gnome-power-manager (Ubuntu)
Status: Confirmed => Invalid
** Changed in: acpi (Ubuntu)
Status: Confirmed => Triaged
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Random reaction to brightness hotkeys
https://bugs.launchpad.net/bugs/376924
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Oh, I haven't applied later patch. I will do that and post the result
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Thanks Dmitriy, can you post your comments at
http://bugzilla.kernel.org/show_bug.cgi?id=13511? The patch and fix work
is going on there, and it would probably be best if we directly work
with them on that site.
After applying the patch, what was the output of:
cat /sys/class/backlight/acpi_video0
Kernel refused to load my DSDT:
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_CUSTOM_DSDT_FILE=""
Bug #246222 reported for Intrepid alpha 3 and marked as fixed is still there!
Default kernel, 2.6.28 has one more line:
CONFIG_ACPI_CUSTOM_DSDT_INITRD=y
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Random reaction to brightness hotkeys
h
Hmm... This should be the reason, but patched DSDT didn't fix the problem. Or
kernel refused to load my DSDT.
Dammit!
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_CUSTOM_DSDT_FILE=""
Bug #246222 reported for Intrepid alpha 3, marked as fixed, is still there!
Config from 2.6.28 contains one mo
Just disassembled laptop's DSDT, there a 3 device LCDD descriptors. All have
method _BCL.
First 2 instances:
Device (LCDD)
{
...
Method (_BCL, 0, NotSerialized)
{
Return (Package (0x10)
{
0x0F,
0x0E,
0x0D,
0x0C,
0x0B,
0x0A,
0x09
sorry for the extra email, upstream updated the patch:
http://bugzilla.kernel.org/attachment.cgi?id=21978
use this instead of the one from my comment on 6/16
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Random reaction to brightness hotkeys
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** Changed in: acpi
Status: Confirmed => Incomplete
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Relaying a message from the upstream developers:
http://bugzilla.kernel.org/show_bug.cgi?id=13511#c4
patch: create symbol link from backlight sys device to ACPI video device
you have only one backlight sysfs I/F, i.e. /sys/class/backlight/acpi_video0,
right?
please apply this patch [1], and get
@phcoder: The linux-acpi developers have asked that you resend your
patch to the linux-acpi mailing list again [1]. When you do, reference
linux kernel bug #13511. Thanks for your help and fixing this bug for
many HP laptop owners.
[1] http://bugzilla.kernel.org/show_bug.cgi?id=13511#c2
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** Changed in: acpi
Status: Unknown => Confirmed
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Random reaction to brightness hotkeys
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Thank you for your bug report. This bug has been reported to the
developers of the software. You can track it and make comments at:
http://bugzilla.kernel.org/show_bug.cgi?id=13511
** Bug watch added: Linux Kernel Bug Tracker #13511
http://bugzilla.kernel.org/show_bug.cgi?id=13511
** Also affe
Applied this patch to .30 kernel -- it helped! Brightness control works
as expected now. But gnome-brightness-applet is often loosing dbus
connection to g-p-m with .30 kernel.
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Random reaction to brightness hotkeys
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There are several other bug reprots with similar symptoms that are now
trying this patch.
Dmitriy Geels just added two dupes to this report. He has down some debugging
at Bug #350912, I just wanted to make sure his info is carried over (there are
more logs and files there, but the following inf
Thank you for your report and for finding and testing that patch! I'm
marking confirmed in both gnome-power-manager and listing as an ACPI
bug.
** Changed in: gnome-power-manager (Ubuntu)
Status: New => Confirmed
** Also affects: acpi (Ubuntu)
Importance: Undecided
Status: New
*
On my laptop I traced it back to kernel and here is the fix:
http://marc.info/?l=linux-acpi&m=124456088526538&w=2
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I don't know if it's related but if the laptop stays idle it will change
brightness for a second and then go back to original brightness. Same when I
touch the touchpad after idle time
Here is lspci
** Attachment added: "lspci.diff"
http://launchpadlibrarian.net/26762111/lspci.diff
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** Attachment added: "gpm.txt"
http://launchpadlibrarian.net/26761676/gpm.txt
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