Thanks. Comment #36 shows the bug:
DP-2 connected 1600x900+1366+0 (0x95) normal (normal left inverted right x axis y axis) 798mm x 334mm Comment #34 does not show the bug: [ 6.555] (II) modeset(0): Output DP-2 using initial mode 2560x1080 +1366+0 So I wonder if those are from different logins? Either way, when it's using the wrong mode of 1600x900 it's also showing an EDID which decodes nicely and includes 2560x1080: ---- Decoded from the EDID in comment #36 ---- EDID version: 1.4 Manufacturer: GSM Model 30485 Serial Number 297684 Made in week 2 of 2019 Digital display 10 bits per primary color channel DisplayPort interface Maximum image size: 80 cm x 34 cm Gamma: 2.20 DPMS levels: Standby Supported color formats: RGB 4:4:4, YCrCb 4:4:4, YCrCb 4:2:2 Default (sRGB) color space is primary color space First detailed timing includes the native pixel format and preferred refresh rate Display is continuous frequency Color Characteristics Red: 0.6513, 0.3320 Green: 0.3066, 0.6308 Blue: 0.1503, 0.0595 White: 0.3134, 0.3291 Established Timings I & II 640x480 59.940 Hz 4:3 31.469 kHz 25.175 MHz (DMT) 640x480 75.000 Hz 4:3 37.500 kHz 31.500 MHz (DMT) 800x600 60.317 Hz 4:3 37.879 kHz 40.000 MHz (DMT) 800x600 75.000 Hz 4:3 46.875 kHz 49.500 MHz (DMT) 832x624 74.551 Hz 4:3 49.726 kHz 57.284 MHz (Apple) 1024x768 60.004 Hz 4:3 48.363 kHz 65.000 MHz (DMT) 1024x768 75.029 Hz 4:3 60.023 kHz 78.750 MHz (DMT) 1280x1024 75.025 Hz 5:4 79.976 kHz 135.000 MHz (DMT) 1152x870 75.062 Hz 192:145 68.681 kHz 100.000 MHz (Apple) Standard Timings 1152x864 59.959 Hz 4:3 53.783 kHz 81.750 MHz (EDID 1.4 source: CVT) 1152x864 60.000 Hz 4:3 53.700 kHz 81.624 MHz (EDID 1.3 source: GTF) 1280x1024 60.020 Hz 5:4 63.981 kHz 108.000 MHz (DMT) 1280x720 60.000 Hz 16:9 45.000 kHz 74.250 MHz (DMT) 1600x900 60.000 Hz 16:9 60.000 kHz 108.000 MHz (DMT, RB) 1680x1050 59.954 Hz 16:10 65.290 kHz 146.250 MHz (DMT) 1920x1080 60.000 Hz 16:9 67.500 kHz 148.500 MHz (DMT) 1280x800 59.810 Hz 16:10 49.702 kHz 83.500 MHz (DMT) 1920x1080 74.906 Hz 16:9 84.643 kHz 220.750 MHz (EDID 1.4 source: CVT) 1920x1080 75.000 Hz 16:9 84.600 kHz 220.637 MHz (EDID 1.3 source: GTF) Detailed mode: Clock 181.250 MHz, 798 mm x 334 mm 2560 2608 2640 2720 ( 48 32 80) 1080 1083 1093 1111 ( 3 10 18) +hsync -vsync VertFreq: 59.978 Hz, HorFreq: 66.636 kHz Detailed mode: Clock 148.500 MHz, 798 mm x 334 mm 1920 2008 2052 2200 ( 88 44 148) 1080 1084 1089 1125 ( 4 5 36) +hsync +vsync VertFreq: 60.000 Hz, HorFreq: 67.500 kHz Display Range Limits Monitor ranges (Bare Limits): 40-75 Hz V, 90-90 kHz H, max dotclock 240 MHz Display Product Name: LG HDR WFHD Has 1 extension block Checksum: 0x97 ---------------- CTA-861 Extension Block Revision 3 Basic audio support Supports YCbCr 4:4:4 Supports YCbCr 4:2:2 1 native detailed modes 26 bytes of CTA data blocks Audio Data Block Linear PCM, max channels 2 Supported sample rates (kHz): 48 44.1 32 Supported sample sizes (bits): 24 20 16 Video Data Block 1920x1080 60.000 Hz 16:9 67.500 kHz 148.500 MHz (VIC 16) 1280x720 60.000 Hz 16:9 45.000 kHz 74.250 MHz (VIC 4) 720x480 59.940 Hz 16:9 31.469 kHz 27.000 MHz (VIC 3) 640x480 59.940 Hz 4:3 31.469 kHz 25.175 MHz (VIC 1) 1920x1080 50.000 Hz 16:9 56.250 kHz 148.500 MHz (VIC 31) 1280x720 50.000 Hz 16:9 37.500 kHz 74.250 MHz (VIC 19) 2560x1080 50.000 Hz 64:27 56.250 kHz 185.625 MHz (VIC 89) 4096x2160 100.000 Hz 256:135 225.000 kHz 1188.000 MHz (VIC 218) 720x576 50.000 Hz 16:9 31.250 kHz 27.000 MHz (VIC 18) Speaker Allocation Data Block Speaker map: FL/FR - Front Left/Right Extended tag: Colorimetry Data Block BT2020YCC BT2020RGB Extended tag: HDR Static Metadata Data Block Electro optical transfer functions: Traditional gamma - SDR luminance range SMPTE ST2084 Supported static metadata descriptors: Static metadata type 1 Detailed mode: Clock 27.000 MHz, 798 mm x 334 mm 720 736 798 858 ( 16 62 60) 480 489 495 525 ( 9 6 30) -hsync -vsync VertFreq: 59.940 Hz, HorFreq: 31.469 kHz Detailed mode: Clock 228.250 MHz, 798 mm x 334 mm 2560 2608 2640 2720 ( 48 32 80) 1080 1083 1093 1119 ( 3 10 26) +hsync -vsync VertFreq: 74.991 Hz, HorFreq: 83.915 kHz Checksum: 0xd7 ** Summary changed: - Secondary monitor unpredictable behavior at boot (Ivy Bridge, DisplayPort) + Modesetting randomly fails to offer modes available in the EDID (CTA-861 Extension Block Revision 3) ** Changed in: xorg-server (Ubuntu) Status: Incomplete => Triaged ** Changed in: xorg-server (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1859071 Title: Modesetting randomly fails to offer all modes available in the EDID To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1859071/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp