Public bug reported: For reference this problem is very similar to #1577074
However, the laptop is simply booting to a black screen on 16.04, the backlight is on but there is no display. Sound is working so I can hear the ubuntu logon noise and can SSH from another machine. During boot the screen on the laptop looks as if it is flashing off and on trying to set modes or something similar, I'm guessing this is the looping shown in the output below Errors from dmesg are as follows: [ 40.744416] [drm:amdgpu_resume [amdgpu]] *ERROR* resume 4 failed -2 [ 40.744453] [drm:amdgpu_resume_kms [amdgpu]] *ERROR* amdgpu_resume failed (-2). [ 40.744613] amdgpu 0000:04:00.0: couldn't schedule ib [ 40.744690] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 40.744744] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 40.807470] r8169 0000:02:00.0 eno1: link down [ 40.807472] r8169 0000:02:00.0 eno1: link down [ 40.807573] IPv6: ADDRCONF(NETDEV_UP): eno1: link is not ready [ 41.933648] amdgpu 0000:04:00.0: couldn't schedule ib [ 41.933721] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 41.933747] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 42.475349] r8169 0000:02:00.0 eno1: link up [ 42.475375] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready [ 45.115657] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.115712] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.115735] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.115739] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.115758] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.115776] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.115779] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.115797] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.115854] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.115858] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.115882] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.115905] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.115908] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.115930] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.115952] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.115955] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.115976] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.115998] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.118843] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.118907] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.118933] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.123106] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.123215] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.123246] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.123252] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.123279] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.123304] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.123308] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.123334] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.123359] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.135599] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.135676] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.135711] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.136796] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.136902] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.136932] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 45.152655] amdgpu 0000:04:00.0: couldn't schedule ib [ 45.152748] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 45.152777] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 46.251287] amdgpu 0000:04:00.0: couldn't schedule ib [ 46.251345] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 46.251366] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 46.251466] amdgpu 0000:04:00.0: couldn't schedule ib [ 46.251485] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 46.251504] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! [ 46.251533] amdgpu 0000:04:00.0: couldn't schedule ib [ 46.251551] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22) [ 46.251570] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job! Output of lspci and lshw are attached Many thanks James ** Affects: xserver-xorg-video-amdgpu (Ubuntu) Importance: Undecided Status: New ** Attachment added: "lspci.txt" https://bugs.launchpad.net/bugs/1597079/+attachment/4691887/+files/lspci.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-amdgpu in Ubuntu. https://bugs.launchpad.net/bugs/1597079 Title: AMDGPU Black Screen when Booting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1597079/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp