I had Mark test a kernel which jsalisbury built that reverted the following commits:
c173e45ac693 UBUNTU: SAUCE: i915_bpo: Validate mode against max. link data rate for DP MST ee161605391d UBUNTU: SAUCE: i915_bpo: Fix DP link rate math Mark's feedback is as follows: "OK. Before I installed the kernel I plugged in the switched-off projector, and saw this: Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173214] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is invalid, remainder is 130 Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173219] Raw EDID: Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173222] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173225] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173227] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173229] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173231] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173233] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173235] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:42 mark-XPS-15-9550 kernel: [71126.173237] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200170] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is invalid, remainder is 130 Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200173] Raw EDID: Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200176] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200177] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200179] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200180] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200181] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200182] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200184] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.200185] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227128] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is invalid, remainder is 130 Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227132] Raw EDID: Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227134] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227136] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227137] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227138] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227140] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227141] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227142] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.227143] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254121] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is invalid, remainder is 130 Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254128] Raw EDID: Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254131] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254132] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254134] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254135] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254136] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254138] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254139] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254140] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 26 09:34:43 mark-XPS-15-9550 kernel: [71126.254145] i915_bpo 0000:00:02.0: HDMI-A-1: EDID block 0 invalid. Which looks like a projector problem except that it works with other devices. Perhaps out EDID eval code is not robust, or fails to handle common misconfigurations of EDID. Now I'll reboot to the updated kernel. OK, with this kernel I still see the same EDID errors. I don't have access to the TV that caused yesterday's panic I'm afraid, it was at an event." -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1658999 Title: [Xenial Regression] Kernel panics on HDMI in Xenial To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1658999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
