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jankom
Guru
Joined: 30 Aug 2021
Posts: 398
Location: USA
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 Posted: Mon Jul 25, 2022 8:04 pm Post subject: i914 firmware error - SOLVED |
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I accidentally discovered that
| Code: | | dmesg | grep -i firmware |
gives | Quote: | [ 0.158830] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 0.675785] Loading firmware: i915/bxt_dmc_ver1_07.bin
[ 0.675837] i915 0000:00:02.0: Direct firmware load for i915/bxt_dmc_ver1_07.bin failed with error -2
[ 0.675848] i915 0000:00:02.0: [drm] Failed to load DMC firmware i915/bxt_dmc_ver1_07.bin. Disabling runtime power management.
[ 0.675856] i915 0000:00:02.0: [drm] DMC firmware homepage: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915
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So I followed the Gentoo documentation | Quote: | KERNEL (Since Linux 4.18) Build firmware blobs into the kernel binary
Device Drivers --->
Generic Driver Options --->
Firmware loader --->
-*- Firmware loading facility
(i915/skl_dmc_ver1_27.bin) Build named firmware blobs into the kernel binary
(/lib/firmware) Firmware blobs root directory
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but after recompiling the kernel the error is still there.
Is this serious? How can I fix it?
Otherwise things seem OK. glgears works fine, glxinfo shows (partially quoted): | Quote: | Extended renderer info (GLX_MESA_query_renderer):
Vendor: Intel (0x8086)
Device: Mesa Intel(R) HD Graphics 500 (APL 2) (0x5a85)
Version: 22.0.5
Accelerated: yes
Video memory: 3072MB
Unified memory: yes
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Last edited by jankom on Mon Jul 25, 2022 9:30 pm; edited 1 time in total |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3961
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| Posted: Mon Jul 25, 2022 8:21 pm Post subject: |
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| Quote: |
So I followed the Gentoo documentation
Quote:
KERNEL (Since Linux 4.1 Build firmware blobs into the kernel binary
Device Drivers --->
Generic Driver Options --->
Firmware loader --->
-*- Firmware loading facility
(i915/skl_dmc_ver1_27.bin) Build named firmware blobs into the kernel binary
(/lib/firmware) Firmware blobs root directory
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Dmesg complains about a different firmware namely
| Code: |
/lib/firmware/i915/bxt_dmc_ver1_07.bin
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I feel it would be infinitely simpler if you had configured i915 as a module (=m) in your .config
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jankom
Guru
Joined: 30 Aug 2021
Posts: 398
Location: USA
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| Posted: Mon Jul 25, 2022 9:29 pm Post subject: Thanks alamahant - SOLVED |
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Super good - thanks!
I recompiled the kernel as module, eliminated "build kernel blobs..." settings, and the dmesg error is gone.
Lessons learned: "stay with modules" |
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MZH
n00b
Joined: 27 May 2023
Posts: 4
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| Posted: Thu Aug 17, 2023 4:54 am Post subject: |
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Sorry for noob question, but how to I add i915 as a module?  |
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jankom
Guru
Joined: 30 Aug 2021
Posts: 398
Location: USA
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| Posted: Fri Aug 18, 2023 6:34 pm Post subject: Sorry for the late answer, I was traveling -jankom |
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(a) Copy from ..config file of kernel source: | Quote: | #
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
CONFIG_FW_CACHE=y
# CONFIG_FW_UPLOAD is not set
# end of Firmware loader
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(b) I'm using "make menuconfig" command, and the setting for i915 is:It is in Display Drivers --> Intel 8xx/9xx/G3x/Gex/HD Graphics section. |
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MZH
n00b
Joined: 27 May 2023
Posts: 4
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| Posted: Sat Aug 19, 2023 1:45 pm Post subject: |
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My kernel was already configured like this, turns out I just forgot to regenerate the initramfs  .
Thanks anyway, I hope you have a good day  |
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