[Bug 37662] Upgrade to version 2.6.38, disable the laptop display back light

[Bug 37662] Upgrade to version 2.6.38, disable the laptop display back light

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37662


Len Brown <lenb@kernel.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lenb@kernel.org
          Component|Power-Video                 |Video(DRI - non Intel)
         AssignedTo|acpi_power-video@kernel-bug |drivers_video-dri@kernel-bu
                   |s.osdl.org                  |gs.osdl.org
            Product|ACPI                        |Drivers




--- Comment #2 from Len Brown <lenb@kernel.org>  2011-06-21 01:48:19 ---
attachment is full of these:

WARNING: at /build/buildd/linux-2.6.38/drivers/gpu/drm/radeon/radeon_gart.c:176
radeon_gart_bind+0x1ab/0x1c0 [radeon]()

I don't see a linked launchpad report.

moving this bug to DRM.

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[Bug 37662] Upgrade to version 2.6.38, disable the laptop display back light

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37662


Gary Liddle <gary.liddle@sp1der.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gary.liddle@sp1der.co.uk




--- Comment #3 from njin <marconifabio@ubuntu-it.org>  2011-06-21 16:30:44 ---
@ Len Brown
Go up and below assigned to there's the launchpad URL, if this is not the right
procedure, please advice me.
Thanks
Fabio

--- Comment #4 from Gary Liddle <gary.liddle@sp1der.co.uk>  2011-08-06 10:42:14 ---
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/740893

Hey

I have the same laptop and have the same problem when i updated the Kernel.

I've been running 2.6.35.22 which has no problems.

I initially updated to 2.6.38-8 which i thought at first had failed, but
noticed the screen was only usable (and i use that word very lightly) in direct
sunlight.

I've now updated to 2.6.38-10 which has the same problem as 2.6.38-8, no back
light on the monitor.

I'm currently viewing the laptop on 2.6.38-10 through an external monitor so i
can try to resolve the problem and can run any diagnostic commands you require.

Please see the above launchpad link for all the debug information regarding
this problem.

Thanks,
Gary

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[Bug 37662] Upgrade to version 2.6.38, disable the laptop display back light

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37662

Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|---                         |OBSOLETE

--- Comment #5 from Alan <alan@lxorguk.ukuu.org.uk> ---
If this is still present in modern kernels please update the bug

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