https://bugzilla.kernel.org/show_bug.cgi?id=208333 --- Comment #9 from Nathan Bryant (nbryant@xxxxxxxxxxxxx) --- I'm seeing similar symptoms on my Geforce GTX 1070 (GP104). Screen blanks after GDM login, Wayland works, Xorg doesn't. This is a regression from 5.7 to 5.8-rc1. As long as I only have my primary monitor connected, after the failure I can still switch to another VT with Ctrl-Alt-F3 and log in to the text console. ~/.local/share/xorg/Xorg.0.log has a few of these: [ 17.240] (EE) modeset(0): failed to set mode: Invalid argument Bisected to this commit: fa4f4c213f5f7807360c41f2501a3031a9940f3a is the first bad commit commit fa4f4c213f5f7807360c41f2501a3031a9940f3a Author: James Jones <jajones@xxxxxxxxxx> Date: Mon Feb 10 15:15:55 2020 -0800 drm/nouveau/kms: Support NVIDIA format modifiers Allow setting the block layout of a nouveau FB object using DRM format modifiers. When specified, the format modifier block layout and kind overrides the GEM buffer's implicit layout and kind. The specified format modifier is validated against the list of modifiers supported by the target display hardware. v2: Used Tesla family instead of NV50 chipset compare v4: Do not cache kind, tile_mode in nouveau_framebuffer v5: Resolved against nouveau_framebuffer cleanup Signed-off-by: James Jones <jajones@xxxxxxxxxx> Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx> drivers/gpu/drm/nouveau/dispnv50/wndw.c | 20 ++++--- drivers/gpu/drm/nouveau/nouveau_display.c | 89 ++++++++++++++++++++++++++++++- drivers/gpu/drm/nouveau/nouveau_display.h | 4 ++ 3 files changed, 104 insertions(+), 9 deletions(-) -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel