Kernel Bug Tracker – Bug 9907
ThinkPad X61 needs acpi_osi="Linux" option to enable the "mute" key
Last modified: 2008-02-15 12:35:31 UTC
Earliest failing kernel version: 22.214.171.124-107.fc8
Distribution: Fedora 8
Hardware Environment: ThinkPad X61
If I boot 2.6.23 or 2.6.24 kernel without any command line options, the 'mute' key does not work. If I add acpi_osi="Linux" command line option in both kernels (2.6.23 and .24) the 'mute' key starts working as expected.
Will attach dmesg output and dmidecode
Created attachment 14728 [details]
Created attachment 14729 [details]
please attach the output from acpidump
Created attachment 14777 [details]
this bug is still present in kernel-2.6.25-0.35.rc1.fc9
The patch below shipped in 2.6.25-rc1-git4
to work around this BIOS issue.
I'll sync it into the previous .stable releases as
part of a blacklist update.
please re-open if you still have an issue
with a release later than above.
Author: Len Brown <firstname.lastname@example.org>
Date: Sun Feb 10 21:29:56 2008 -0500
ACPI: DMI blacklist updates
Acer Extensa 5220 -- OSI(Linux) is a NOP
Dell OptiPlex 755 -- OSI(Linux) turns GUSB into a NOP
Dell PowerEdge 1950 -- OSI(Linux) is a NOP
Dell Precision 690 -- OSI(Linux) touches USB (skips GUSB)
FSC ESPRIMO Mobile V5505 -- OSI(Linux) is a NOP
Lenovo LENOVO3000 V100 -- OSI(Linux) is a NOP
Lenovo X61x -- OSI(Linux) enables Linux specific AML
Sony Vaio VGN-NR11S_S - OSI(Linux) is a NOP
Signed-off-by: Len Brown <email@example.com>