Alex Mayorga Adame, could you please confirm this issue exists with the
latest development release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains,
please just make a comment to this.
Also, could you please test the latest upstream
This bug still exist on 13.10. Please help!
** Changed in: xserver-xorg-video-nouveau (Ubuntu)
Status: Fix Released = New
** Changed in: linux (Ubuntu)
Status: Incomplete = New
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Alex Mayorga Adame, could you please test the latest upstream kernel available
(v3.10-rc2) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will
allow additional upstream developers to examine the issue. Please do not test
the kernel in the mainline kernels archive directory daily
** Changed in: linux (Ubuntu)
Status: Incomplete = New
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https://bugs.launchpad.net/bugs/551668
Title:
Fn+F5 and Fn+F6 don't modify brightness
I've updated to raring and the problem is still there.
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Title:
Fn+F5 and Fn+F6 don't modify brightness on Sony
I had to reinstall Win7 and Ubuntu 12.10 just to update the BIOS to
R0210Y5 but the bug is still there.
What else do I need to provide to get this fixed?
** Changed in: linux (Ubuntu)
Status: Incomplete = New
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Alex Mayorga Adame, thank you for updating your BIOS. Could you please
test http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc6-raring/ ?
** Tags removed: bios-outdated
** Tags removed: kernel-bug-exists-upstream
** Tags added: needs-upstream-testing
** Changed in: linux (Ubuntu)
Alex Mayorga Adame, thank you for providing the requested information.
As per http://esupport.sony.com/US/p/model-
home.pl?mdl=VPCCW1FFXLLOC=3#/downloadTab a update is available for your
BIOS (R0210Y5). If you update to this, does this change anything?
** Changed in: linux (Ubuntu)
Status:
** Attachment added: backlight
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465038/+files/backlight
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** Attachment added: DSDT.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465040/+files/DSDT.dat
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** Attachment added: SSDT1.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465041/+files/SSDT1.dat
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** Attachment added: SSDT2.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465042/+files/SSDT2.dat
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** Attachment added: DSDT.dsl
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465043/+files/DSDT.dsl
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** Attachment added: acpi
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465039/+files/acpi
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** Attachment added: fwts_method
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465045/+files/fwts_method
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** Attachment added: video
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465046/+files/video
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** Attachment added: fwts
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465044/+files/fwts
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** Attachment added: dmidecode.log
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465047/+files/dmidecode.log
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** Attachment added: version
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/551668/+attachment/3465048/+files/version
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Fn+F5 (brightness -)
0xe0 0x4c 0xe0 0xcc
Fn+F6 (brightness +)
0xe0 0x54 0xe0 0xd4
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Title:
Fn+F5 and Fn+F6
Reboot with kernel parameter acpi_backlight=vendor doesn't allow to
change the brightness either, OSD indicator appears but no change in
brightness occur.
** Attachment added: vendorbacklight
Reboot with kernel parameter video.use_bios_initial_backlight=0 doesn't
allow to change the brightness either, OSD indicator appears but no
change in brightness occur.
Let me know if there's anything else I could provide to make this work,
the LCD brightness on this laptop is burning my retinas
The problem still exist with this kernel:
alex-mayorga@VPCCW1FFXL:~$ uname -a
Linux VPCCW1FFXL 3.7.0-999-generic #201212140435 SMP Fri Dec 14 09:36:32 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux
Pressing Fn+F5 and Fn+F6 makes the on screen indicator appear but they
don't modify the LCD's
Might this be caused by the little mesh at /sys/class/backlight ?
alex-mayorga@VPCCW1FFXL:~$ ls -la /sys/class/backlight
total 0
drwxr-xr-x 2 root root 0 Dec 14 14:33 .
drwxr-xr-x 53 root root 0 Dec 14 14:33 ..
lrwxrwxrwx 1 root root 0 Dec 14 14:36 nv_backlight -
Alex Mayorga Adame, could you please provide the information
https://wiki.ubuntu.com/Kernel/Debugging/Backlight ?
** Tags removed: kernel-bug-exists-upstream-3.7.0-999
** Tags added: kernel-bug-exists-upstream-3.7
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
** Tags
Alex Mayorga Adame, could you please test the latest upstream kernel available
following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow
additional upstream developers to examine the issue. Please do not test the
kernel in the daily folder, but the one all the way at the bottom.
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