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[SOLVED] Intel graphics, no signal once kernel loads i915
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Apprentice
Apprentice


Joined: 10 Dec 2002
Posts: 158
Location: Québec, Canada

PostPosted: Tue Jun 01, 2021 2:36 am    Post subject: Reply with quote

Oh!?!?!?!

In a last-ditch effort, I moved to git-sources.

Code:
[    0.483594] Linux agpgart interface v0.103
[    0.484114] i915 0000:00:02.0: vgaarb: deactivate vga console
[    0.487689] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    0.487708] i915 0000:00:02.0: Direct firmware load for i915/kbl_dmc_ver1_04.bin failed with error -2
[    0.487710] i915 0000:00:02.0: [drm] Failed to load DMC firmware i915/kbl_dmc_ver1_04.bin. Disabling runtime power management.
[    0.487711] i915 0000:00:02.0: [drm] DMC firmware homepage: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915
[    0.512425] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0
[    0.513035] ACPI: video: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    0.513227] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input3
[    0.514521] loop: module loaded


No more error (that firmware hiccup is not a concern), my monitor has a signal, and I have /dev/dri/card0!

And really, the point was really just to provide the i915 maintainers with a bug report using the latest code - I had pretty much given up here. That said, running on git-sources (~amd64) is not great. I might try backporting the i915 code into my gentoo-sources directory and see how it goes. Still not great though. I'll have to figure out which one is the lesser evil! :)

Edit: not surprisingly, the i915 module for kernel 5.13 does not compile with kernel 5.12. So I'll be using git-sources until gentoo-sources makes it to 5.14!
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