Activity log for bug #1761751

Date Who What changed Old value New value Message
2018-04-06 13:31:36 David Henningsson bug added bug
2018-04-06 13:32:32 David Henningsson attachment added lspci.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1761751/+attachment/5104013/+files/lspci.txt
2018-04-06 13:45:26 David Henningsson description I've been running 16.04 + hwe kernel 4.15 for a while now and recently I'm now having a black screen instead. I've also tried an 18.04 daily live USB stick, which has the same issue. It probably started during an upgrade this week or last week. As a start I'm blaming the Linux kernel since booting a 4.13 kernel works just fine. Known faulty kernel versions are: * linux-image-4.15.0-041500-generic (mainline kernel), * linux-image-4.15.0-13-generic (Ubuntu kernel), * whatever comes with 18.04 daily live USB stick as of 20180404. Not sure how to best collect logs and system information for you since I'm not used to debugging black screens, so I'm just attaching lspci as a start. I've been running 16.04 + hwe kernel 4.15 for a while now and recently I'm now having a black screen instead. I've also tried an 18.04 daily live USB stick, which has the same issue. It probably started during an upgrade this week or last week. As a start I'm blaming the Linux kernel since booting a 4.13 kernel works just fine. Known faulty kernel versions are:  * linux-image-4.15.0-041500-generic (mainline kernel), * linux-image-4.16.0-041600-generic (mainline kernel),  * linux-image-4.15.0-13-generic (Ubuntu kernel),  * whatever comes with 18.04 daily live USB stick as of 20180404. Not sure how to best collect logs and system information for you since I'm not used to debugging black screens, so I'm just attaching lspci as a start.
2018-04-06 13:57:02 David Henningsson description I've been running 16.04 + hwe kernel 4.15 for a while now and recently I'm now having a black screen instead. I've also tried an 18.04 daily live USB stick, which has the same issue. It probably started during an upgrade this week or last week. As a start I'm blaming the Linux kernel since booting a 4.13 kernel works just fine. Known faulty kernel versions are:  * linux-image-4.15.0-041500-generic (mainline kernel), * linux-image-4.16.0-041600-generic (mainline kernel),  * linux-image-4.15.0-13-generic (Ubuntu kernel),  * whatever comes with 18.04 daily live USB stick as of 20180404. Not sure how to best collect logs and system information for you since I'm not used to debugging black screens, so I'm just attaching lspci as a start. I've been running 16.04 + hwe kernel 4.15 for a while now and recently I'm now having a black screen instead. I've also tried an 18.04 daily live USB stick, which has the same issue. It probably started during an upgrade this week or last week. As a start I'm blaming the Linux kernel since booting a 4.13 kernel works just fine. Known faulty kernel versions are:  * linux-image-4.15.0-041500-generic (mainline kernel),  * linux-image-4.16.0-041600-generic (mainline kernel),  * linux-image-4.15.0-13-generic (Ubuntu kernel),  * whatever comes with 18.04 daily live USB stick as of 20180404. Not sure how to best collect logs and system information for you since I'm not used to debugging black screens, so I'm just attaching lspci as a start. EDIT: Workaround found by adding "amdgpu.dc=0" to kernel boot parameters.
2018-04-06 14:00:05 Ubuntu Kernel Bot linux (Ubuntu): status New Incomplete
2018-04-06 14:00:07 Ubuntu Kernel Bot tags bionic
2018-04-06 17:50:38 Joseph Salisbury linux (Ubuntu): importance Undecided High
2018-04-06 17:50:51 Joseph Salisbury linux (Ubuntu): status Incomplete Triaged
2018-04-06 17:51:09 Joseph Salisbury tags bionic bionic kernel-da-key
2018-04-06 17:51:15 Joseph Salisbury nominated for series Ubuntu Bionic
2018-04-06 17:51:15 Joseph Salisbury bug task added linux (Ubuntu Bionic)
2018-04-06 17:56:40 Joseph Salisbury tags bionic kernel-da-key bionic kernel-da-key performing-bisect
2018-04-10 16:43:54 Joseph Salisbury linux (Ubuntu Bionic): assignee Joseph Salisbury (jsalisbury)
2018-04-10 16:45:04 Joseph Salisbury linux (Ubuntu Bionic): status Triaged In Progress
2018-04-12 01:22:26 David Henningsson bug watch added https://bugs.freedesktop.org/show_bug.cgi?id=105880
2018-05-15 11:47:11 semreh bug added subscriber semreh
2018-09-18 17:07:39 Exiele Daniel Fagundes de Oliveira bug added subscriber Exiele Daniel Fagundes de Oliveira
2018-10-23 11:23:47 André L bug added subscriber André L
2018-12-11 16:30:22 lprent attachment added syslog_fragment_4.15.0.43.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1761751/+attachment/5221404/+files/syslog_fragment_4.15.0.43.txt
2019-01-19 17:23:06 Joseph Salisbury linux (Ubuntu Bionic): assignee Joseph Salisbury (jsalisbury)
2019-01-19 17:23:10 Joseph Salisbury linux (Ubuntu): assignee Joseph Salisbury (jsalisbury)
2019-01-23 00:31:19 Naheem bug watch added https://bugs.freedesktop.org/show_bug.cgi?id=107668
2019-04-22 16:10:26 Terry Rudd bug added subscriber Terry Rudd
2019-07-24 21:03:05 Brad Figg tags bionic kernel-da-key performing-bisect bionic cscc kernel-da-key performing-bisect
2019-08-30 21:44:51 André L removed subscriber André L