I bought the Dasung HD-F 2019 e-ink monitor. The default screen resolution is 2200x1650 @ 40. Dasung also supports 1600x1200 @ 60 and I would like to use that. Unfortunately, the screen does not fill completely in Fedora 34. My notebook has Intel UHD Graphics 620.
I don't know where the problem is, but my guess is that the system thinks Dasung is 20x15 cm in size. In fact, it is 27x20 cm. Filled area is exactly 20x15 cm.
I completely do not know how to configure monitors in Linux in an advanced way. I spent many hours reading and trying different ways.
Photo of Dasung with 1600x1200
What I did (using some tutorials):I made hex dump of edid and replaced 20x15 cm with 27x20 cm (offset 0x15 and 0x16). Changed offset 0x7f to the new checksum. Copied file to /lib/firmware/edid/correct-edid.bin. Created Dracut configuration /etc/dracut.conf.d/00-dasung-hdf-edid.conf to copy the new EDID into initramfs:
install_items+=" /lib/firmware/edid/correct-edid.bin "
Regenerated initramfs using Dracut: sudo dracut -f.Added drm.edid_firmware=HDMI-A-1:edid/correct-edid.bin to the end of GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub.At the end: sudo grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
Unfortunately it didn't help.
Result of xrandr --verbose:
Screen 0: minimum 320 x 200, current 2200 x 2730, maximum 16384 x 16384eDP-1 connected primary 1920x1080+0+1650 (0x47) normal (normal left inverted right x axis y axis) 309mm x 174mm Identifier: 0x42 Timestamp: 242415 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: _MUTTER_PRESENTATION_OUTPUT: 0 EDID: 00ffffffffffff0006af3d3200000000 101c0104a51f117802fc15a055509b27 0c505400000001010101010101010101 010101010101143780b8703824401010 3e0035ae100000180000000f00000000 00000000000000000020000000fe0041 554f0a202020202020202020000000fe 004231343048414e30332e32200a00bd scaling mode: Full aspect supported: Full, Center, Full aspect Colorspace: Default supported: Default, RGB_Wide_Gamut_Fixed_Point, RGB_Wide_Gamut_Floating_Point, opRGB, DCI-P3_RGB_D65, BT2020_RGB, BT601_YCC, BT709_YCC, XVYCC_601, XVYCC_709, SYCC_601, opYCC_601, BT2020_CYCC, BT2020_YCC max bpc: 12 range: (6, 12) Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 panel orientation: Normal supported: Normal, Upside Down, Left Side Up, Right Side Up link-status: Good supported: Good, Bad CONNECTOR_ID: 95 supported: 95 non-desktop: 0 range: (0, 1) 1920x1080 (0x45) 141.000MHz -HSync -VSync +preferred h: width 1920 start 1936 end 1952 total 2104 skew 0 clock 67.02KHz v: height 1080 start 1083 end 1097 total 1116 clock 60.05Hz<HERE LONG LIST OF RESOLUTIONS OF MY NOTEBOOK MONITOR>HDMI-1 connected 2200x1650+0+0 (0x7b2) normal (normal left inverted right x axis y axis) 200mm x 150mm Identifier: 0x43 Timestamp: 242415 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 1 CRTCs: 0 1 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: _MUTTER_PRESENTATION_OUTPUT: 0 EDID: 00ffffffffffff001263010000000000 0a1d0103801b14782a08a5a2574fa228 <--- 1b14 (27 x 20 cm) is my own change 0f505400000001010101010101010101 using custom edid file, before 010101010101c13e98a880722e603820 it was 140f (20 x 15 cm) 3600c8960000001e0000001000000000 00000000000000000000000000fc0050 617065726c696b6520482044483f4030 62b0324040c013006d552100001e00c5 HDCP Content Type: HDCP Type0 supported: HDCP Type0, HDCP Type1 Content Protection: Undesired supported: Undesired, Desired, Enabled max bpc: 12 range: (8, 12) content type: No Data supported: No Data, Graphics, Photo, Cinema, Game Colorspace: Default supported: Default, SMPTE_170M_YCC, BT709_YCC, XVYCC_601, XVYCC_709, SYCC_601, opYCC_601, opRGB, BT2020_CYCC, BT2020_RGB, BT2020_YCC, DCI-P3_RGB_D65, DCI-P3_RGB_Theater aspect ratio: Automatic supported: Automatic, 4:3, 16:9 Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on link-status: Good supported: Good, Bad CONNECTOR_ID: 103 supported: 103 non-desktop: 0 range: (0, 1) 2200x1650 (0x7b2) 160.650MHz +HSync +VSync *current +preferred h: width 2200 start 2256 end 2288 total 2368 skew 0 clock 67.84KHz v: height 1650 start 1653 end 1659 total 1696 clock 40.00Hz 1600x1200 (0x7b3) 162.000MHz +HSync +VSync h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.00KHz v: height 1200 start 1201 end 1204 total 1250 clock 60.00HzResult of edid-decode < /sys/class/drm/card0-HDMI-A-1/edid:
edid-decode (hex):00 ff ff ff ff ff ff 00 12 63 01 00 00 00 00 000a 1d 01 03 80 1b 14 78 2a 08 a5 a2 57 4f a2 28 <--- 1b14 (27 x 20 cm) is my own change0f 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01 using custom edid file, before01 01 01 01 01 01 c1 3e 98 a8 80 72 2e 60 38 20 it was 140f (20 x 15 cm)36 00 c8 96 00 00 00 1e 00 00 00 10 00 00 00 0000 00 00 00 00 00 00 00 00 00 00 00 00 fc 00 5061 70 65 72 6c 69 6b 65 20 48 20 44 48 3f 40 3062 b0 32 40 40 c0 13 00 6d 55 21 00 00 1e 00 c5----------------Block 0, Base EDID: EDID Structure Version & Revision: 1.3 Vendor & Product Identification: Manufacturer: DSC Model: 1 Made in: week 10 of 2019 Basic Display Parameters & Features: Digital display Maximum image size: 27 cm x 20 cm <--- before my changes it was 20x15 Gamma: 2.20 DPMS levels: Off RGB color display First detailed timing is the preferred timing Color Characteristics: Red : 0.6328, 0.3398 Green: 0.3105, 0.6328 Blue : 0.1582, 0.0605 White: 0.3134, 0.3291 Established Timings I & II: none Standard Timings: none Detailed Timing Descriptors: DTD 1: 2200x1650 40.001 Hz 4:3 67.842 kHz 160.650 MHz (200 mm x 150 mm) Hfront 56 Hsync 32 Hback 80 Hpol P Vfront 3 Vsync 6 Vback 37 Vpol P Dummy Descriptor: Display Product Name: 'Paperlike H D' DTD 2: 1600x1200 60.000 Hz 4:3 75.000 kHz 162.000 MHz (621 mm x 341 mm) Hfront 64 Hsync 192 Hback 304 Hpol P Vfront 1 Vsync 3 Vback 46 Vpol PChecksum: 0xc5In Windows 10 everything works fine.
I will be grateful for your help.
