[Bug 311716] Re: The slider brightness Applet has value inverted after the last update (2.6.27-11)

Steve Beattie sbeattie at ubuntu.com
Mon Jan 12 10:38:06 UTC 2009


I tried 2.6.27-11.23smb2 on my lenovo t61, which had brightness broken
on -11.21 and -11.22. Brightness controls did not work at all with
2.6.27-11.23smb2; however, rebooting with "option thinkpad_acpi
brightness_enable=1" caused the brightness controls to start working
once again.

"options video acpi_backlight=video" in /etc/modprobe.d/options just
gave me "kernel: [   14.960104] video: Unknown parameter
`acpi_backlight'" in my dmesg output, so I don't think that's an
accurate test. I haven't tried rebooting with that option on the command
line.

Attached is the output of dmesg, grep -r . /proc/acpi/video. and grep
-Sr . /sys/devices/virtual/backlight/ for run where I gave the kernel no
additional options.

** Attachment added: "kernel-test-2.6.27-11.23smb2"
   http://launchpadlibrarian.net/21122174/kernel-test-2.6.27-11.23smb2

-- 
The slider brightness Applet has value inverted after the last update (2.6.27-11)
https://bugs.launchpad.net/bugs/311716
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