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[SRU,Bionic,0/1] drm/i915/bios: filter out invalid DDC pins from VBT child devices

Message ID cover.1526056524.git.joseph.salisbury@canonical.com
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Series drm/i915/bios: filter out invalid DDC pins from VBT child devices | expand

Message

Joseph Salisbury May 11, 2018, 4:56 p.m. UTC
BugLink: http://bugs.launchpad.net/bugs/1764194

== SRU Justification ==
This bug causes a Dell Latitude 5490/5590 with BIOS update 1.1.9 to get a
black screen at boot. Specifying 'nomodeset' on the kernel command line works
around the problem.

Intel resolved the problem in upstream commit a3520b8992e5.  This commit
is now in mainline as of 4.17.rc2.  It has also been cc'd to upstream
stable.

This patch is also needed in Artful.  Artful needed a minor backport, so
it is being sent separate of Bionic.

== Fix ==
a3520b8992e5 ("drm/i915/bios: filter out invalid DDC pins from VBT child devices")

== Regression Potential ==
Low.  This commit was also cc'd to upstream stable, so it recieved
additional upstream review.

== Test Case ==
A test kernel was built with this patch and tested by the original bug reporter.
The bug reporter states the test kernel resolved the bug.


Jani Nikula (1):
  drm/i915/bios: filter out invalid DDC pins from VBT child devices

 drivers/gpu/drm/i915/intel_bios.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

Comments

Khalid Elmously May 17, 2018, 2:33 a.m. UTC | #1
On 2018-05-11 12:56:05 , Joseph Salisbury wrote:
> BugLink: http://bugs.launchpad.net/bugs/1764194
> 
> == SRU Justification ==
> This bug causes a Dell Latitude 5490/5590 with BIOS update 1.1.9 to get a
> black screen at boot. Specifying 'nomodeset' on the kernel command line works
> around the problem.
> 
> Intel resolved the problem in upstream commit a3520b8992e5.  This commit
> is now in mainline as of 4.17.rc2.  It has also been cc'd to upstream
> stable.
> 
> This patch is also needed in Artful.  Artful needed a minor backport, so
> it is being sent separate of Bionic.
> 
> == Fix ==
> a3520b8992e5 ("drm/i915/bios: filter out invalid DDC pins from VBT child devices")
> 
> == Regression Potential ==
> Low.  This commit was also cc'd to upstream stable, so it recieved
> additional upstream review.
> 
> == Test Case ==
> A test kernel was built with this patch and tested by the original bug reporter.
> The bug reporter states the test kernel resolved the bug.
> 
> 
> Jani Nikula (1):
>   drm/i915/bios: filter out invalid DDC pins from VBT child devices
> 
>  drivers/gpu/drm/i915/intel_bios.c | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
> 
Acked-by: Khalid Elmously <khalid.elmously@canonical.com>
Khalid Elmously May 17, 2018, 5:58 a.m. UTC | #2
Applied to B

On 2018-05-11 12:56:05 , Joseph Salisbury wrote:
> BugLink: http://bugs.launchpad.net/bugs/1764194
> 
> == SRU Justification ==
> This bug causes a Dell Latitude 5490/5590 with BIOS update 1.1.9 to get a
> black screen at boot. Specifying 'nomodeset' on the kernel command line works
> around the problem.
> 
> Intel resolved the problem in upstream commit a3520b8992e5.  This commit
> is now in mainline as of 4.17.rc2.  It has also been cc'd to upstream
> stable.
> 
> This patch is also needed in Artful.  Artful needed a minor backport, so
> it is being sent separate of Bionic.
> 
> == Fix ==
> a3520b8992e5 ("drm/i915/bios: filter out invalid DDC pins from VBT child devices")
> 
> == Regression Potential ==
> Low.  This commit was also cc'd to upstream stable, so it recieved
> additional upstream review.
> 
> == Test Case ==
> A test kernel was built with this patch and tested by the original bug reporter.
> The bug reporter states the test kernel resolved the bug.
> 
> 
> Jani Nikula (1):
>   drm/i915/bios: filter out invalid DDC pins from VBT child devices
> 
>  drivers/gpu/drm/i915/intel_bios.c | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
> 
> -- 
> 2.7.4
> 
> 
> -- 
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