It was test by Huawei and verified this bug fix the problem of x-window.  I
have change it, but not  I am make it right for what you expected. I am not
so familiar of our Launchpad.

[image: Inline image 1]

On Fri, Jul 21, 2017 at 5:24 PM, Kleber Sacilotto de Souza <
kleber.so...@canonical.com> wrote:

> This bug is awaiting verification that the kernel in -proposed solves
> the problem. Please test the kernel and update this bug with the
> results. If the problem is solved, change the tag 'verification-needed-
> zesty' to 'verification-done-zesty'. If the problem still exists, change
> the tag 'verification-needed-zesty' to 'verification-failed-zesty'.
>
> If verification is not done by 5 working days from today, this fix will
> be dropped from the source code, and this bug will be closed.
>
> See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
> to enable and use -proposed. Thank you!
>
>
> ** Tags added: verification-needed-zesty
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1698706
>
> Title:
>   Quirk for non-compliant PCI bridge on HiSilicon D05 board
>
> Status in linux package in Ubuntu:
>   Fix Committed
> Status in linux source package in Zesty:
>   Fix Committed
>
> Bug description:
>   SRU Justification
>
>   [Impact]
>   Xorg autodetection does not work on HiSilicon D05 boards.
>
>   [Fix]
>   The HiSilicon D05 board has some PCI bridges (PCI ID 19e5:1610) that are
> not spec-compliant: they do not set the VGA Enable bit when a VGA card is
> behind the bridge. This stops vgaarb setting the device as a boot vga
> device, breaking Xorg auto-detection. [0]
>
>   Despite this, the hibmc VGA card (PCI ID 19e5:1711) is known to work
>   when behind these bridges.
>
>   Provide a quirk so that this combination of bridge and card works.
>
>   [Testcase]
>   On an affected board, run:
>   # find /sys/devices -name boot_vga -exec cat \{\} \;
>
>   This should print 0 without this patch and 1 with this patch.
>
>   [Regression Potential]
>   There is a risk with overriding the VGA arbiter that adding additional
> VGA cards to the board may go wrong somehow. The fixup specifically tests
> for the bridge and card on the board, so regressions should be limited to
> that combination of bridge and card.
>
>   [Notes]
>   HiSilicon is hoping to have 16.04.3 HWE kernel support their board,
> hence the submission of this patch before it has been accepted upstream.
> The patch has been submitted upstream and I will continue to work with
> upstream to land it.[1]
>
>   [0] https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1691991 - this
>   bug tracked debugging of a segfault and then this issue. Comments 25
>   (https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1691991/comments/25
> )
>   and 31 onwards detail this issue.
>
>   [1] https://patchwork.ozlabs.org/patch/778054/
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/
> 1698706/+subscriptions
>


-- 
Zhanglei Mao
Solutions Architect, Sales and Business Development
Canonical Group Ltd.
zhanglei....@canonical.com
+86-13625010929 (m)
+852-6700 6026 (m)
www.ubuntu.com
www.canonical.com


** Attachment added: "image.png"
   https://bugs.launchpad.net/bugs/1698706/+attachment/4918803/+files/image.png

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1698706

Title:
  Quirk for non-compliant PCI bridge on HiSilicon D05 board

Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Zesty:
  Fix Committed

Bug description:
  SRU Justification

  [Impact]
  Xorg autodetection does not work on HiSilicon D05 boards.

  [Fix]
  The HiSilicon D05 board has some PCI bridges (PCI ID 19e5:1610) that are not 
spec-compliant: they do not set the VGA Enable bit when a VGA card is behind 
the bridge. This stops vgaarb setting the device as a boot vga device, breaking 
Xorg auto-detection. [0]

  Despite this, the hibmc VGA card (PCI ID 19e5:1711) is known to work
  when behind these bridges.

  Provide a quirk so that this combination of bridge and card works.

  [Testcase]
  On an affected board, run:
  # find /sys/devices -name boot_vga -exec cat \{\} \;

  This should print 0 without this patch and 1 with this patch.

  [Regression Potential]
  There is a risk with overriding the VGA arbiter that adding additional VGA 
cards to the board may go wrong somehow. The fixup specifically tests for the 
bridge and card on the board, so regressions should be limited to that 
combination of bridge and card.

  [Notes]
  HiSilicon is hoping to have 16.04.3 HWE kernel support their board, hence the 
submission of this patch before it has been accepted upstream. The patch has 
been submitted upstream and I will continue to work with upstream to land it.[1]

  [0] https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1691991 - this
  bug tracked debugging of a segfault and then this issue. Comments 25
  (https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1691991/comments/25)
  and 31 onwards detail this issue.

  [1] https://patchwork.ozlabs.org/patch/778054/

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