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Bug#734003: linux-image-3.13-rc6-amd64: Display manager fails to start, Intel graphics driver not loaded/used, brightness conrtols reversed



I have not experienced either of these issues with the 3.14 kernel image. Brightness controls work as they should and the display manager loads just fine.

Thank you for your reply though.

On 2014-05-08 9:24 PM, Matteo Cypriani wrote:
Hi Alex,

On Thu, 02 Jan 2014 19:33:04 -0500, Alex Vanderpol <karashata@gmail.com>
wrote:
Package: src:linux
Version: 3.13~rc6-1~exp1
Severity: important

Dear Maintainer,

This package (version 3.13~rc6-1~exp1) is exhibiting some symptoms that
lead me to believe it's buggy, namely:

1: My display manager (GDM) fails to start when the system finishes booting.
2: The Intel graphics driver does not appear to be loaded/used (possibly the
reason for #1). Instead, the driver "Gallium 0.4 on llvmpipe (LLVM 3.3, 128
bits)" is used.
3: For some reason, the brightness controls end up reversed (trying to lower
the brightness raises it, and vice-versa), causing my display to be turned
off rather than turned up to full brightness when the system finishes
booting (possibly also related to #2).
Did you try reproducing this with Linux 3.14?

For your #3, you should try passing i915.invert_brightness=1 to the kernel
when booting (press E in Grub and add this at the end of the "linux" line),
it should solve the problem. I've read somewhere that if your machine requires
this you should report it, but I don't remember where so.

Hope this helps,
   Matteo


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