Hi,
I notice very regular screen glitch on my Lenovo Thinkpad T14s Gen3 AMD, powered by Fedora 37.
Here are the details of my configuration: inxi_2023-03-26.txt · GitHub
Here an example (around 3s):
Am I the only one to have this problem on this laptop model?
Do you have any idea how I can fix this?
Do you know if a bug has already been reported in upstream?
Best regards,
Stéphane
grumpey
(Joe Walker)
March 26, 2023, 11:59am
3
I do not see thst issue, but I have the 500 nit screen
I executed the commands that were indicated here :
$ sudo dnf install edid-decode
$ cd /sys
$ sudo find . -name edid
./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-DP-6/edid
./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-DP-4/edid
./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-HDMI-A-1/edid
./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-DP-2/edid
./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-eDP-1/edid
./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-DP-5/edid
./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-DP-3/edid
./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-DP-1/edid
$ sudo su
# edid-decode ./devices/pci0000:00/0000:00:08.1/0000:33:00.0/drm/card1/card1-eDP-1/edid
edid-decode (hex):
00 ff ff ff ff ff ff 00 0e 6f 04 14 00 00 00 00
00 1e 01 04 a5 1e 13 78 03 f5 fa a4 55 4c 9a 23
0e 50 56 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 35 3c 80 a0 70 b0 23 40 30 20
36 00 2e bd 10 00 00 18 00 00 00 fd 00 30 3c 4a
4a 0f 01 0a 20 20 20 20 20 20 00 00 00 fe 00 43
53 4f 54 20 54 33 0a 20 20 20 20 20 00 00 00 fe
00 4d 4e 45 30 30 37 4a 41 31 2d 31 0a 20 00 83
----------------
Block 0, Base EDID:
EDID Structure Version & Revision: 1.4
Vendor & Product Identification:
Manufacturer: CSO
Model: 5124
Made in: 2020
Basic Display Parameters & Features:
Digital display
Bits per primary color channel: 8
DisplayPort interface
Maximum image size: 30 cm x 19 cm
Gamma: 2.20
Supported color formats: RGB 4:4:4
First detailed timing includes the native pixel format and preferred refresh rate
Display is continuous frequency
Color Characteristics:
Red : 0.6435, 0.3349
Green: 0.2978, 0.6025
Blue : 0.1396, 0.0576
White: 0.3144, 0.3378
Established Timings I & II: none
Standard Timings: none
Detailed Timing Descriptors:
DTD 1: 1920x1200 60.000779 Hz 8:5 74.101 kHz 154.130000 MHz (302 mm x 189 mm)
Hfront 48 Hsync 32 Hback 80 Hpol N
Vfront 3 Vsync 6 Vback 26 Vpol N
Display Range Limits:
Monitor ranges (Bare Limits): 48-60 Hz V, 74-74 kHz H, max dotclock 150 MHz
Alphanumeric Data String: 'CSOT T3'
Alphanumeric Data String: 'MNE007JA1-1'
Checksum: 0x83
[root@t14s sys]# dmidecode -s bios-version
R22ET55W (1.25 )
I just added amdgpu.sg_display=0
option to my kernel config.
I will see if the glitch, disappears or not.
Glitch always present even after this setting .
I upgraded to kernel 6.2.8-200.fc37.x86_64
, glitch are always present.
I upgraded to kernel 6.2.8-200.fc37.x86_64
, glitch are always present.
Glitch always present with kernel 6.2.8
.
Did you try naguams workaround?
1 Like
Did you try naguams workaround?
Yes: I set amdgpu.dcdebugmask=0x10
in /etc/default/grub
:
...
GRUB_CMDLINE_LINUX="... amdgpu.dcdebugmask=0x10"
...
# grub2-mkconfig -o /boot/grub2/grub.cfg
# reboot
...
[root@t14s dri]# cat /sys/kernel/debug/dri/1/eDP-1/psr_capability
Sink support: yes [0x03]
Driver support: no [0xffffffff]
[root@t14s dri]# cat /sys/kernel/debug/dri/1/eDP-1/psr_state
0
I will post a message by tomorrow, to tell you whether the problem is fixed or not.
1 Like
Glad to hear!
I can’t speak to other effects of this kernel parameter so you might want to check the Lenovo threads about what other users are reporting.
1 Like