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 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/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1698706/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
