amdgpu 20701184 0
amdxcp 12288 1 amdgpu
cec 106496 2 drm_display_helper,amdgpu
drm_buddy 32768 1 amdgpu
drm_display_helper 327680 2 amdgpu,radeon
drm_exec 12288 2 amdgpu,radeon
drm_panel_backlight_quirks 12288 1 amdgpu
drm_suballoc_helper 20480 2 amdgpu,radeon
drm_ttm_helper 16384 3 amdgpu,radeon
gpu_sched 65536 1 amdgpu
i2c_algo_bit 20480 2 amdgpu,radeon
radeon 2453504 0
ttm 135168 3 amdgpu,radeon,drm_ttm_helper
video 81920 2 amdgpu,radeon
wmi 32768 1 video
I get the identical results above (example from 42) on two different PCs with
the:
same chipset A88X
modestly different CPUs A10-8750B Godavari (newer; w/problem); A10-7850K OK,
older, Kaveri
but same R7 APU: chip-ID: 1002:130f
For years I've been running both just fine on amdgpu kernel module (and amdgpu
or modesetting display driver) via the following kernel cmdline parameters:
radeon.cik_support=0 amdgpu.cik_support=1
This no longer produces working KMS on the one with the newer CPU, now broken
in 6.16.12, 6.17.8 and 6.12.53, meaning the Godavari's KMS doesn't /engage/
amdgpu, so video reduced to using radeon by default by omitting those
parameters. With 6.15.10 it's still OK, though slow/glitchy to boot, with dmesg
ending at 37.7s. Unlike 41 & 42, in 43, 6.16.6 and 6.12.53 are OK, but not
6.17.8. These PCs don't get used much, so haven't had new kernels installed
often.
With 6.15.10, there's this one undesirable in dmesg:
[ 7.616569] simple-framebuffer simple-framebuffer.0: [drm] Registered 1
planes with drm panic
All works apparently as expected.
Since 6.15, e.g. with 6.17.8, and same command line parameters, besides no KMS
& 1024x768, more errors:
# dmesg | grep 'Kernel c'
[ 0.036783] Kernel command line: BOOT_IMAGE=/boot/vmlinuz
root=LABEL=<filter> noresume selinux=0 audit=0 ipv6.disable=1 net.ifnames=0
mitigations=auto consoleblank=0 radeon.cik_support=0 amdgpu.cik_support=1
video=1440x900@60 3
# dmesg | grep aile
[ 23.149548] workqueue: Failed to create a rescuer kthread for wq
"amdgpu-reset-dev": -EINTR
[ 23.149560] [drm:amdgpu_reset_create_reset_domain [amdgpu]] *ERROR* Failed
to allocate wq for amdgpu_reset_domain!
[ 23.152104] amdgpu 0000:00:01.0: probe with driver amdgpu failed with error
-12
[ 28.830866] platform regulatory.0: Direct firmware load for regulatory.db
failed with error -2
[ 28.830881] cfg80211: failed to load regulatory.db
# dmesg | grep drm
[ 6.199717] ACPI: bus type drm_connector registered
[ 6.404386] simple-framebuffer simple-framebuffer.0: [drm] Registered 1
planes with drm panic
[ 6.404400] [drm] Initialized simpledrm 1.0.0 for simple-framebuffer.0 on
minor 0
[ 6.404508] simple-framebuffer simple-framebuffer.0: [drm] User-defined mode
not supported: "1440x900": 60 106441 1440 1520 1672 1904 900 901 904 932 0x20
0x6
[ 6.411841] simple-framebuffer simple-framebuffer.0: [drm] fb0:
simpledrmdrmfb frame buffer device
[ 9.527699] [drm] radeon kernel modesetting enabled.
[ 23.125827] [drm] amdgpu kernel modesetting enabled.
[ 23.149502] [drm] initializing kernel modesetting (KAVERI 0x1002:0x130F
0x1458:0xD000 0xD7).
[ 23.149527] [drm] register mmio base: 0xFEB00000
[ 23.149530] [drm] register mmio size: 262144
[ 23.149560] [drm:amdgpu_reset_create_reset_domain [amdgpu]] *ERROR* Failed
to allocate wq for amdgpu_reset_domain!
[ 27.482588] systemd[1]: Starting [email protected] - Load Kernel Module
drm...
[ 27.575477] systemd[1]: [email protected]: Deactivated successfully.
[ 27.575894] systemd[1]: Finished [email protected] - Load Kernel Module
drm.
# journalctl -b -p3 | grep gpu
Nov 24 12:58:24 ga88x kernel: workqueue: Failed to create a rescuer kthread for
wq "amdgpu-reset-dev": -EINTR
Nov 24 12:58:24 ga88x kernel: [drm:amdgpu_reset_create_reset_domain [amdgpu]]
*ERROR* Failed to allocate wq for amdgpu_reset_domain!
Nov 24 12:58:24 ga88x kernel: amdgpu 0000:00:01.0: amdgpu: Fatal error during
GPU init
Nov 24 12:58:24 ga88x kernel: amdgpu 0000:00:01.0: probe with driver amdgpu
failed with error -12
There is a difference in displays used, but I can't imagine using fewer or not
having DP having any impact on this:
Godavari (bad): 2560x1440 or 1920x1200 on HDMI; 1680x1050 on DVI
Kaveri (OK): 2560x1440 on DP; 1920x1200 on HDMI; 1680x1050 on DVI
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata
--
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