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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2007173
Title:
i915: loss of the screen connected in DP to my dockstation
Status in linux package in Ubuntu:
Incomplete
Bug description:
Since a few versions of the kernel I'm losing the screen connected to
my dockstation thinkpad using displayport. My running laptop is a
thinkpad T14s
I'm currently running
"Linux laptop 5.19.0-28-generic #29~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu
Dec 15 12:05:40 UTC 2 x86_64 x86_64 x86_64 GNU/Linux"
but I had the same issue while running "linux-image-5.15.0-60-generic" and I
think with "linux-image-5.15.0-58-generic" too.
When losing the screen, I'm getting "i915 0000:00:02.0: [drm] *ERROR*
Link Training Unsuccessful" from the kernel.
During the last screen loss, I tried to connect the DisplayPort to
another screen to eliminate the possibility that it could be a issue
with it.
Not only did the other screen not work either, but I got the following
stacktrace:
17957.541801] CPU: 3 PID: 30705 Comm: kworker/3:1 Tainted: G U
5.19.0-28-generic #29~22.04.1-Ubuntu
[17957.541811] Hardware name: LENOVO 20T1S62300/20T1S62300, BIOS N2YET34W
(1.23 ) 12/31/2021
[17957.541816] Workqueue: events i915_hotplug_work_func [i915]
[17957.542099] RIP: 0010:intel_dp_prep_link_retrain+0x1b0/0x1d0 [i915]
[17957.542378] Code: d2 74 32 48 89 55 a8 4c 89 4d b0 e8 1a 86 f3 f5 48 8b 55
a8 48 c7 c1 50 7c b0 c0 48 c7 c7 e6 00 ae c0 48 89 c6 e8 87 5a 41 f6 <0f> 0b 4c
8b 4d b0 e9 36 ff ff ff 48 8b 17 eb c9 e8 ab bc 4d f6 e9
[17957.542385] RSP: 0018:ffffb27bc6677cb0 EFLAGS: 00010246
[17957.542393] RAX: 0000000000000000 RBX: ffff9d6da9ef26c0 RCX:
0000000000000000
[17957.542398] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
[17957.542401] RBP: ffffb27bc6677d08 R08: 0000000000000000 R09:
0000000000000000
[17957.542405] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff9d6c99894170
[17957.542409] R13: ffffb27bc6677d27 R14: ffffb27bc6677d70 R15:
ffff9d6ca032c800
[17957.542414] FS: 0000000000000000(0000) GS:ffff9d73ad6c0000(0000)
knlGS:0000000000000000
[17957.542420] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[17957.542425] CR2: 0000170804379000 CR3: 0000000792010005 CR4:
00000000003706e0
[17957.542431] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[17957.542434] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[17957.542439] Call Trace:
[17957.542443] <TASK>
[17957.542453] intel_dp_retrain_link+0xee/0x2f0 [i915]
[17957.542773] intel_ddi_hotplug+0xc6/0x1f0 [i915]
[17957.543049] i915_hotplug_work_func+0x1f3/0x320 [i915]
[17957.543316] process_one_work+0x222/0x400
[17957.543327] worker_thread+0x50/0x3e0
[17957.543334] ? rescuer_thread+0x3c0/0x3c0
[17957.543340] kthread+0xe6/0x110
[17957.543349] ? kthread_complete_and_exit+0x20/0x20
[17957.543359] ret_from_fork+0x1f/0x30
[17957.543374] </TASK>
[17957.543377] ---[ end trace 0000000000000000 ]---
[17985.975481] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful
[17991.187501] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful
Distrib is :
"lsb_release -rd
Description: Linux Mint 21
Release: 21"
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