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I've been running arch on my hybrid i915/nvidia laptop for years, but after upgrading to 6.4.1 i get blank screen right from the initrd image.
it appeared the machine had booted into X since I could blindly use the keyboard to launch a terminal and successfully issue a reboot command. i had no joy connecting an external monitor though to see what was going on.
to fix it i added the kernel parameter 'nomodeset' to the boot cmd line, which made X fail to start but allowed me to downgrade linux and linux-headers packages back to 6.3.9 from the tty/console which then allowed successful boots into X as normal.
i've added linux and linux-headers to the ignored packages in pacman.conf until i hear more about what's going on. i suspect an issue with intel's i915 driver.
Last edited by alu1 (2023-08-29 11:14:51)
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Please post the full system journal from a boot with the issue.
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Possibly related, https://bbs.archlinux.org/viewtopic.php … 1#p2107841
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here's the full system log from the first bad boot
https://mclo.gs/bKNGB4W
and here's the good boot previous to that
https://mclo.gs/jEkOyVG
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Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] GT0: Incompatible option enable_guc=3 - GuC submission is N/A
Jul 04 08:34:06 alu1 kernel: Console: switching to colour dummy device 80x25
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: vgaarb: deactivate vga console
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] [ENCODER:102:DDI C/PHY C] is disabled/in DSI mode with an ungated DDI clock, gate it
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] GT0: GuC firmware i915/kbl_guc_70.1.1.bin version 70.1.1
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] GT0: HuC firmware i915/kbl_huc_4.0.0.bin version 4.0.0
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] GT0: HuC: authenticated!
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] GT0: GUC: submission disabled
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] GT0: GUC: SLPC disabled
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] Skipping intel_backlight registration
Jul 04 08:34:06 alu1 kernel: [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0
Jul 04 08:34:06 alu1 kernel: i915 0000:00:02.0: [drm] Cannot find any crtc or sizes
Looks to be the same issue as seth linked to.
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reverting commit ca62297b2085 fixes the problem. some discussion over on intel drm i915 issue tracker here and here
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So likely the same as https://bbs.archlinux.org/viewtopic.php?id=287418 & https://bbs.archlinux.org/viewtopic.php?id=287415
https://bbs.archlinux.org/viewtopic.php?id=286935 has a distinctly different EDID from those, can you post your xorg log or edid?
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my edid's the same as those shown in the intel threads, copied below.
00000000 00 ff ff ff ff ff ff 00 06 af ed 80 00 00 00 00 |................|
00000010 10 1b 01 04 a5 22 13 78 02 6a 75 a4 56 52 9c 27 |.....".x.ju.VR.'|
00000020 0b 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01 |.PT.............|
00000030 01 01 01 01 01 01 ce 8f 80 b6 70 38 88 40 30 20 |..........p8.@0 |
00000040 a5 00 58 c1 10 00 00 00 ce 8f 80 b6 70 38 2b 47 |..X.........p8+G|
00000050 30 20 a5 00 58 c1 10 00 00 00 00 00 00 fe 00 41 |0 ..X..........A|
00000060 55 4f 0a 20 20 20 20 20 20 20 20 20 00 00 00 fe |UO. ....|
00000070 00 42 31 35 36 48 41 4e 30 38 2e 30 20 0a 00 17 |.B156HAN08.0 ...|
Last edited by alu1 (2023-07-24 21:09:47)
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solved by revert of the offending commit in kernel 6.5
Last edited by alu1 (2023-08-29 11:16:52)
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