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- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed- bionic'.
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-bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem in Ubuntu. https://bugs.launchpad.net/bugs/1791569 Title: some nvidia p1000 graphic cards hang during the boot Status in HWE Next: New Status in linux package in Ubuntu: Fix Released Status in linux-oem package in Ubuntu: New Status in linux source package in Bionic: Fix Committed Status in linux-oem source package in Bionic: New Bug description: BugLink: https://bugs.launchpad.net/bugs/1791569 This patch is in the 4.18 already, no need to send it to cosmic. Due to the context conflict, if we want to apply this patch as it is, we need to apply a large amount of patches ahead of this patch, it is possible to introduce some regression. So I made some change in this patch, it is some differnt from the orignal patch, but they have the same logic, and it can be applied to bionic kernel. [Impact] We have 2 nvidia graphic cards, and the nouveau driver in the bionic kernel can't work well with both of these 2 cards, one of the cards hang during the boot process, we compared the output of lspci and vbios version of these 2 cards, they are same; and according to nivida's reply, it is possible that they have some difference on computational units (https://devtalk.nvidia.com/default/topic/1038973/ linux/2-same-quadro-p1000-cards-but-only-one-can-install-ubuntu-/), and kernel-4.18 fixed this problem, through bisect, this patch was found. [Fix] backport a upstream patch to fix this problem. without this patch, the number of tpc (texture process cluster) is hardcoded to be 5 for some nv graphic families, but in practice, the tpc number of many families is not 5. And the p1000 grphic card belong to gp107 family, it is 3 intead of 5. [Test Case] tested this patch with P1000, P2000, P620 and P500 graphic cards, all work well as before. [Regression Potential] Very low, this patch comes from upstream, and I have tested it with many nv graphic cards, they all worked well as before. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1791569/+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
