[i915] Intermittent freezing and LSPCON init failed kernel messages

[Kamikaze]

Hardware: Lenovo ThinkPad model 20ST0055AU

Boot messages show:
[ 6.397804] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[ 6.397901] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0

During normal operation there will intermittently be a freeze for a second or two and then more of these messages display in the kernel logs:

[ 505.487006] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[ 505.487072] [drm:lspcon_resume [i915]] *ERROR* LSPCON init failed on port D
[ 506.747930] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[ 506.748018] [drm:lspcon_resume [i915]] *ERROR* LSPCON init failed on port D

The system will then become operational again.

The system is still usable, but it is annoying.

I've switched onto this OEM kernel from the generic kernel (5.13), as I had other problems with 5.13 regarding external displays not coming back after idle timeouts.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.14.0-1036-oem 5.14.0-1036.40
ProcVersionSignature: Ubuntu 5.14.0-1036.40-oem 5.14.21
Uname: Linux 5.14.0-1036-oem x86_64
ApportVersion: 2.20.11-0ubuntu27.23
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu May 12 10:29:31 2022
InstallationDate: Installed on 2021-05-05 (371 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
SourcePackage: linux-signed-oem-5.14
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Paweł Pańczyk (vicat)]

Having the same problem on Ubuntu 22.04 with 5.15 kernel running on Dell Precision 7730.

[Daniel van Vugt (vanvugt)]

Now also reported in kernel 5.15.0-50.56-generic (bug 1992563)

[Brandon W. King (brandon-w-king)]

I too am having this problem:

5.15.0-52-generic #58~20.04.1-Ubuntu

System-manufacturer : LENOVO
System-product-name : 20SUS5W300
System-version : ThinkPad P15 Gen 1
Bios-release-date : 07/04/2022
Bios-version : N30ET47W (1.30 )

[Albert Schotschneider (schotschneider)]

I am having the same problem here.

5.15.0-52-generic #58~20.04.1-Ubuntu

I do have the same system as @Brandon W. King, also same BIOS version.

[Alessandro Zini (aleeraser)]

I am having the same issue (since months) and have a very similar setup as @brandon-w-king

5.15.0-60-generic #66~20.04.1-Ubuntu

System-manufacturer : LENOVO
System-product-name : 20SUS27T00
System-version : ThinkPad P15 Gen 1
Bios-release-date : 12/14/2022
Bios-version : N30ET49W (1.32 )

[Christoffer (roev)]

Same issue here on

System-manufacturer : LENOVO
System-product-name : 20SUS51107
System-version : ThinkPad P15 Gen 1
Bios-release-date : 12/14/2022
Bios-version : N30ET49W (1.32)

with
5.15.0-67-generic #74-22.04.1-Ubuntu
and
5.19.0-35-generic #36~22.04.1-Ubuntu

[Dan (dan-voyant)]

Same issue here (very similar to above)

System-manufacturer : LENOVO
System-product-name : 20SUS51107
System-version : ThinkPad T15g Gen 1
Bios-release-date : 12/14/2022
Bios-version : N30ET49W (1.32)

5.19.0-38-generic #39~22.04.1-Ubuntu

[Marcus Uneson (marcus-uneson)]

Same issue here, very similar to the above:

System-manufacturer : LENOVO
System-product-name : 20STCTO1WW
System-version : ThinkPad P15 Gen 1
Bios-release-date : 10/07/2022
Bios-version : N30ET48W (1.31 )

5.19.0-41-generic

[Günter Bertels (gbertels)]

I have the same issues with Kernel 5.19.0-46-generic

System-manufacturer : LENOVO
System-version : ThinkPad P15 Gen 1
Operating System: Ubuntu 22.04.2 LTS

[john (jobir123)]

Same problem on 6.2.0-26-generic under 23.04.

System-manufacturer : LENOVO
System-product-name : 20URS05D00
System-version : ThinkPad T15g Gen 1
Bios-version : N30ET49W (1.32 )

Switching BIOS to discrete only mode fixes the issue for me but not ideal.

[Lockywolf (lockywolf)]

I have the same problem on Slackware64 15.0 with 6.7.2

Also see

https://gitlab.freedesktop.org/drm/intel/-/issues/4458#note_2273700

[COLIN Stéphane (bigbob-fun)]

Same problem on 6.5.0-17-generic #17~22.04.1-Ubuntu.

System Information
 Manufacturer: LENOVO
 Product Name: 20SUS2LM0D
 Version: ThinkPad P15 Gen 1
 Serial Number: PF2J52X3
 Wake-up Type: Power Switch
 SKU Number: LENOVO_MT_20SU_BU_Think_FM_ThinkPad P15 Gen 1
 Family: ThinkPad P15 Gen 1

Is there anyone working on this BUG, it provide very bad experience on a very good computer...

[Mukesh Kumar (raknos13)]

Facing same issue on 6.6.10-76060610-generic on Pop!_OS 22.04 LTS using Dell Inspiron 15 7567.

Screen fails to recover after suspend/sleep giving this error, can't switch to ttys either, only solution is to force reboot, which is very annoying as I lose all my work from the session.

I've seen several forums with this bug with open issue going back to several years but there seems to be no solution, is no one working on it ?...

[scott (pinecone007)]

See same issue using Ubuntu 23.10 on a HP HP ProDesk 400 G3 DM/82A5 and it uses Intel HD Graphics 630. Occasionally I will get a black screen with no ability to activate which then requires a reboot. Sometimes I will need to power off and unplug hdmi cable.

i915 0000:00:02.0: [drm] *ERROR* LSPCON mode hasn't settled
2024-02-27T13:33:30.125032-06:00 HPProDesk400 kernel: [ 3323.472414] i915 0000:00:02.0: [drm] *ERROR* LSPCON mode change timed out
2024-02-27T13:33:30.125049-06:00 HPProDesk400 kernel: [ 3323.472417] i915 0000:00:02.0: [drm] *ERROR* LSPCON mode change failed
2024-02-27T13:33:30.125049-06:00 HPProDesk400 kernel: [ 3323.472418] i915 0000:00:02.0: [drm] *ERROR* LSPCON resume failed
2024-02-27T13:33:30.133026-06:00 HPProDesk400 kernel: [ 3323.481193] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful
2024-02-27T13:33:30.149026-06:00 HPProDesk400 kernel: [ 3323.498313] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful

[scott (pinecone007)]

Hoping to see the issue go away with the new Ubuntu 24.04 on a HP HP ProDesk 400 G3 DM/82A5 and it uses Intel HD Graphics 630. But nope still happens. I needed to pull the power for a bit before screen would come back properly. Is there additional information needed to troubleshoot the issue?

024-04-25T19:09:21.155484-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* LSPCON mode hasn't settled
2024-04-25T19:09:21.429475-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* LSPCON mode change timed out
2024-04-25T19:09:21.429481-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* LSPCON mode change failed
2024-04-25T19:09:21.429482-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* LSPCON resume failed
2024-04-25T19:09:21.438472-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful
2024-04-25T19:09:21.456511-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful
2024-04-25T19:09:23.289474-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* LSPCON mode hasn't settled
2024-04-25T19:09:23.572475-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* LSPCON mode change timed out
2024-04-25T19:09:23.572480-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* LSPCON mode change failed
2024-04-25T19:09:23.572482-05:00 ProDesk400 kernel: i915 0000:00:02.0: [drm] *ERROR* LSPCON resume failed

[john (jobir123)]

FWIW I also just tried 24.04 as well as the latest BIOS update (1.37).

The issue appears to be significantly worse. I was initially unable to boot into a desktop environment at all.

Changing the BIOS setting for Display to Discrete (from Hybrid) meant that everything worked but monitor detection was broken in Wayland so I've stayed with Xorg where it is only partially broken.