From: Thomas Meyer <thomas@m3y3r.de>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: 2.6.38-rc2: acpi backlight control missing
Date: Sat, 22 Jan 2011 11:49:09 +0100 [thread overview]
Message-ID: <1295693349.2120.3.camel@localhost.localdomain> (raw)
with 2.6.38-rc2 the acpi backlight is gone:
$ ll /sys/devices/virtual/backlight
ls: cannot access /sys/devices/virtual/backlight: No such file or directory
$ ll /sys/class/backlight/
total 0
with 2.6.37:
$ ll /sys/devices/virtual/backlight
insgesamt 0
drwxr-xr-x. 3 root root 0 22. Jan 2011 acpi_video0
$ ll /sys/class/backlight/
insgesamt 0
lrwxrwxrwx. 1 root root 0 22. Jan 2011 acpi_video0
-> ../../devices/virtual/backlight/acpi_video0
dmesg:
$ grep -i video dmesg-3*.txt
dmesg-37.txt:[ 0.216370] pci 0000:00:02.0: Boot video device
dmesg-37.txt:[ 1.102662] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input4
dmesg-37.txt:[ 1.102670] ACPI: Video Device [OVGA] (multi-head: yes rom: no post: no)
dmesg-37.txt:[ 18.843946] Linux video capture interface: v2.00
dmesg-37.txt:[ 19.189825] uvcvideo: Found UVC 1.00 device WebCam (064e:a102)
dmesg-37.txt:[ 19.207062] usbcore: registered new interface driver uvcvideo
dmesg-37.txt:[ 19.207065] USB Video Class driver (v1.0.0)
dmesg-38.txt:[ 0.215527] pci 0000:00:02.0: Boot video device
dmesg-38.txt:[ 19.466882] Linux video capture interface: v2.00
dmesg-38.txt:[ 19.503083] uvcvideo: Found UVC 1.00 device WebCam (064e:a102)
dmesg-38.txt:[ 19.520292] usbcore: registered new interface driver uvcvideo
dmesg-38.txt:[ 19.520295] USB Video Class driver (v1.0.0)
$ grep ACPI_VIDEO /boot/config-2.6.3[78]*
/boot/config-2.6.37:CONFIG_ACPI_VIDEO=y
/boot/config-2.6.38-rc2:CONFIG_ACPI_VIDEO=y
any ideas?
next reply other threads:[~2011-01-22 10:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-22 10:49 Thomas Meyer [this message]
2011-01-22 19:43 ` 2.6.38-rc2: acpi backlight control missing Rafael J. Wysocki
2011-01-26 18:01 ` Thomas Meyer
2011-01-28 21:12 ` Thomas Meyer
2011-01-31 20:39 ` Rafael J. Wysocki
2011-01-31 21:34 ` Thomas Meyer
2011-01-31 22:01 ` Rafael J. Wysocki
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