Booting 5.14.0-rc4 on my box with Radeon graphics breaks with
[drm:radeon_ttm_init [radeon]] *ERROR* failed initializing buffer object driver(-19). radeon 0000:01:00.0: Fatal error during GPU init
after which the screen goes black for the rest of kernel boot and early user-space init. Once the console login shows up the screen is in some legacy low-res mode and Xorg can't be started.
A git bisect between v5.14-rc3 (good) and v5.14-rc4 (bad) identified
# first bad commit: [69de4421bb4c103ef42a32bafc596e23918c106f] drm/ttm: Initialize debugfs from ttm_global_init()
Reverting that from 5.14.0-rc4 gives me a working kernel again.
Note that I have # CONFIG_DEBUG_FS is not set
/Mikael
[Not subscribed so please CC me. Manual quoting after using lore's in-reply-to functionality. First time doing that so hope I got it right.]
Mikael Pettersson mikpelinux@gmail.com wrote...
Booting 5.14.0-rc4 on my box with Radeon graphics breaks with
[drm:radeon_ttm_init [radeon]] *ERROR* failed initializing buffer object driver(-19). radeon 0000:01:00.0: Fatal error during GPU init
Seeing this here too. amdgpu on polaris-11, on an old amd-fx6100 system.
after which the screen goes black for the rest of kernel boot and early user-space init.
*NOT* seeing that. However, I have boot messages turned on by default and I see them as usual, only it stays in vga-console mode instead of switching to framebuffer after early-boot. I'm guessing MP has a high-res boot-splash which doesn't work in vga mode, thus the black-screen until the login shows up.
Once the console login shows up the screen is in some legacy low-res mode and Xorg can't be started.
A git bisect between v5.14-rc3 (good) and v5.14-rc4 (bad) identified
# first bad commit: [69de4421bb4c103ef42a32bafc596e23918c106f] drm/ttm: Initialize debugfs from ttm_global_init()
Reverting that from 5.14.0-rc4 gives me a working kernel again.
Note that I have # CONFIG_DEBUG_FS is not set
That all matches here, including the unset CONFIG_DEBUG_FS and confirming the revert on 5.14.0-rc4 works.
On Mon, Aug 2, 2021 at 8:29 PM Duncan j.duncan@cox.net wrote:
[Not subscribed so please CC me. Manual quoting after using lore's in-reply-to functionality. First time doing that so hope I got it right.]
Mikael Pettersson mikpelinux@gmail.com wrote...
Booting 5.14.0-rc4 on my box with Radeon graphics breaks with
[drm:radeon_ttm_init [radeon]] *ERROR* failed initializing buffer object driver(-19). radeon 0000:01:00.0: Fatal error during GPU init
Seeing this here too. amdgpu on polaris-11, on an old amd-fx6100 system.
after which the screen goes black for the rest of kernel boot and early user-space init.
*NOT* seeing that. However, I have boot messages turned on by default and I see them as usual, only it stays in vga-console mode instead of switching to framebuffer after early-boot. I'm guessing MP has a high-res boot-splash which doesn't work in vga mode, thus the black-screen until the login shows up.
Yes, I have the Fedora boot splash enabled.
Once the console login shows up the screen is in some legacy low-res mode and Xorg can't be started.
A git bisect between v5.14-rc3 (good) and v5.14-rc4 (bad) identified
# first bad commit: [69de4421bb4c103ef42a32bafc596e23918c106f] drm/ttm: Initialize debugfs from ttm_global_init()
Reverting that from 5.14.0-rc4 gives me a working kernel again.
Note that I have # CONFIG_DEBUG_FS is not set
That all matches here, including the unset CONFIG_DEBUG_FS and confirming the revert on 5.14.0-rc4 works.
Thanks for the confirmation.
dri-devel@lists.freedesktop.org
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Duncan -
Mikael Pettersson