Hello Since some days on next, nouveau fail to load: [ 2.754087] nouveau 0000:02:00.0: vgaarb: deactivate vga console [ 2.761260] Console: switching to colour dummy device 80x25 [ 2.766888] nouveau 0000:02:00.0: NVIDIA MCP77/MCP78 (0aa480a2) [ 2.783954] nouveau 0000:02:00.0: bios: version 62.77.2a.00.04 [ 2.810122] nouveau 0000:02:00.0: fb: 256 MiB stolen system memory [ 3.484031] nouveau 0000:02:00.0: DRM: VRAM: 256 MiB [ 3.488993] nouveau 0000:02:00.0: DRM: GART: 1048576 MiB [ 3.494308] nouveau 0000:02:00.0: DRM: TMDS table version 2.0 [ 3.500052] nouveau 0000:02:00.0: DRM: DCB version 4.0 [ 3.505192] nouveau 0000:02:00.0: DRM: DCB outp 00: 01000300 0000001e [ 3.511632] nouveau 0000:02:00.0: DRM: DCB outp 01: 01011332 00020010 [ 3.518074] nouveau 0000:02:00.0: DRM: DCB conn 00: 00000100 [ 3.523728] nouveau 0000:02:00.0: DRM: DCB conn 01: 00001261 [ 3.529455] nouveau 0000:02:00.0: DRM: failed to initialise sync subsystem, -28 [ 3.545946] nouveau: probe of 0000:02:00.0 failed with error -28 I bisected it to: git bisect start # good: [62fb9874f5da54fdb243003b386128037319b219] Linux 5.13 git bisect good 62fb9874f5da54fdb243003b386128037319b219 # bad: [fb0ca446157a86b75502c1636b0d81e642fe6bf1] Add linux-next specific files for 20210701 git bisect bad fb0ca446157a86b75502c1636b0d81e642fe6bf1 # good: [f63c4fda987a19b1194cc45cb72fd5bf968d9d90] Merge remote-tracking branch 'rdma/for-next' git bisect good f63c4fda987a19b1194cc45cb72fd5bf968d9d90 # bad: [49c8769be0b910d4134eba07cae5d9c71b861c4a] Merge remote-tracking branch 'drm/drm-next' git bisect bad 49c8769be0b910d4134eba07cae5d9c71b861c4a # good: [4e3db44a242a4e2afe33b59793898ecbb61d478e] Merge tag 'wireless-drivers-next-2021-06-25' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next git bisect good 4e3db44a242a4e2afe33b59793898ecbb61d478e # bad: [5745d647d5563d3e9d32013ad4e5c629acff04d7] Merge tag 'amd-drm-next-5.14-2021-06-02' of https://gitlab.freedesktop.org/agd5f/linux into drm-next git bisect bad 5745d647d5563d3e9d32013ad4e5c629acff04d7 # bad: [c99c4d0ca57c978dcc2a2f41ab8449684ea154cc] Merge tag 'amd-drm-next-5.14-2021-05-19' of https://gitlab.freedesktop.org/agd5f/linux into drm-next git bisect bad c99c4d0ca57c978dcc2a2f41ab8449684ea154cc # bad: [ae25ec2fc6c5a9e5767bf1922cd648501d0f914c] Merge tag 'drm-misc-next-2021-05-17' of git://anongit.freedesktop.org/drm/drm-misc into drm-next git bisect bad ae25ec2fc6c5a9e5767bf1922cd648501d0f914c # bad: [cac80e71cfb0b00202d743c6e90333c45ba77cc5] drm/vkms: rename cursor to plane on ops of planes composition git bisect bad cac80e71cfb0b00202d743c6e90333c45ba77cc5 # good: [178bdba84c5f0ad14de384fc7f15fba0e272919d] drm/ttm/ttm_device: Demote kernel-doc abuses git bisect good 178bdba84c5f0ad14de384fc7f15fba0e272919d # bad: [3f3a6524f6065fd3d130515e012f63eac74d96da] drm/dp: Clarify DP AUX registration time git bisect bad 3f3a6524f6065fd3d130515e012f63eac74d96da # bad: [6dd7efc437611db16d432e0030f72d0c7e890127] drm/gud: cleanup coding style a bit git bisect bad 6dd7efc437611db16d432e0030f72d0c7e890127 # bad: [13b29cc3a722c2c0bc9ab9f72f9047d55d08a2f9] drm/mxsfb: Don't select DRM_KMS_FB_HELPER git bisect bad 13b29cc3a722c2c0bc9ab9f72f9047d55d08a2f9 # bad: [d02117f8efaa5fbc37437df1ae955a147a2a424a] drm/ttm: remove special handling for non GEM drivers git bisect bad d02117f8efaa5fbc37437df1ae955a147a2a424a # good: [13ea9aa1e7d891e950230e82f1dd2c84e5debcff] drm/ttm: fix error handling if no BO can be swapped out v4 git bisect good 13ea9aa1e7d891e950230e82f1dd2c84e5debcff # first bad commit: [d02117f8efaa5fbc37437df1ae955a147a2a424a] drm/ttm: remove special handling for non GEM drivers Reverting the patch permit to have nouveau works again. Regards
