https://bugzilla.kernel.org/show_bug.cgi?id=44451
Summary: no backlight control in Acer Aspire One D270
Product: ACPI
Version: 2.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Created an attachment (id=75221)
--> (https://bugzilla.kernel.org/attachment.cgi?id=75221)
various dumps (acpidump, iasl, fwts, dmidecode, dmesg etc)
Backlight can't be controlled in Aspire One D270.
booting with acpi_backlight=vendor doesn't change a thing.
/sys/class/backlight is empty.
This was reported in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/974806
but it appears like the reporter never followed up with the recommendation to
upstream the bug (I didn't find anything on "D270 backlight" on
bugzilla.kernel.org), so I'm doing it here.
My system:
Ubuntu 12.04 LTS, kernel 3.2.0-25-generic-pae
The previous reporter checked it with 3.2.0-22.35
/sys/class/backlight is empty.
/proc/acpi/video does not exist
'ACPI: Video' doesn't appear in dmesg.
Attaching all kinds of dumps as recommended by
https://wiki.kubuntu.org/Kernel/Debugging/Backlight
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