I'm glad to see there are more reports about this problem. Let me know if need my getting info about this monitor, or testing anything.
Thanks for looking into this. Tiago Martins Araújo On Tue, Oct 28, 2025, 20:08 Jani Nikula <[email protected]> wrote: > On Mon, 15 Sep 2025, Tiago Martins Araújo <[email protected]> > wrote: > >> That's not the complete EDID data, though. It's missing 6*16 bytes. If > >> you go by the hex offsets, 0x100 does not follow 0x090. > > > >> please grab the EDID from sysfs. > > > > Fresh from my terminal: > > ➜ ~ cat /sys/class/drm/card1-eDP-1/edid | edid-decode > > edid-decode (hex): > > > > 00 ff ff ff ff ff ff 00 0e 6f 16 14 00 00 00 00 > > 00 20 01 04 b5 1e 13 78 03 21 15 a8 53 49 9c 25 > > 0f 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01 > > 01 01 01 01 01 01 ce 87 40 a0 b0 08 6a 70 30 20 > > 36 00 2d bc 10 00 00 18 00 00 00 fd 00 28 78 e5 > > e5 46 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 5a 41 31 2d 35 0a 20 01 af > > > > 70 13 79 00 00 03 01 14 9a 0f 01 05 3f 0b 9f 00 > > 2f 00 1f 00 07 07 69 00 02 00 05 00 00 00 00 00 > > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0 98 > > > > ---------------- > > > > Block 0, Base EDID: > > EDID Structure Version & Revision: 1.4 > > Vendor & Product Identification: > > Manufacturer: CSO > > Model: 5142 > > Made in: 2022 > > Basic Display Parameters & Features: > > Digital display > > Bits per primary color channel: 10 > > 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 supports continuous frequencies > > Color Characteristics: > > Red : 0.6562, 0.3261 > > Green: 0.2851, 0.6103 > > Blue : 0.1445, 0.0595 > > White: 0.3134, 0.3291 > > Established Timings I & II: none > > Standard Timings: none > > Detailed Timing Descriptors: > > DTD 1: 2880x1800 60.000966 Hz 16:10 114.362 kHz 347.660000 > MHz > > (301 mm x 188 mm) > > Hfront 48 Hsync 32 Hback 80 Hpol N > > Vfront 3 Vsync 6 Vback 97 Vpol N > > Display Range Limits: > > Monitor ranges (Range Limits Only): 40-120 Hz V, 229-229 kHz H, max > > dotclock 700 MHz > > Alphanumeric Data String: 'CSOT T3' > > Alphanumeric Data String: 'MNE007ZA1-5' > > Extension blocks: 1 > > Checksum: 0xaf > > > > ---------------- > > > > Block 1, DisplayID Extension Block: > > Version: 1.3 > > Extension Count: 0 > > Display Product Type: Extension Section > > Video Timing Modes Type 1 - Detailed Timings Data Block: > > DTD: 2880x1800 120.000207 Hz 16:10 228.720 kHz 695.310000 MHz > > (aspect 16:10, no 3D stereo) > > Hfront 48 Hsync 32 Hback 80 Hpol N > > Vfront 3 Vsync 6 Vback 97 Vpol N > > Checksum: 0xf0 (should be 0xf8) > > Checksum: 0x98 > > There's an i915 bug report [1] on what is likely a similar Lenovo model > to yours, with the same display, but with an Intel GPU. > > I looked at adding an EDID quirk for this, but actually passing the > information all the way down to the DisplayID checksum validation is > going to be annoying. :( > > > BR, > Jani. > > [1] https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/14703 > > > -- > Jani Nikula, Intel >
