I can confirm the following: I had to revert to: 4.13.16-041316-generic and it works great with this kernel ! I'll stick with this kernel until the problem gets solved.
However, from 4.15.* it seems like it doesn't work (with the kernels I tested). I also tested with "linux-image-unsigned-4.18.5-041805-generic" (upstream) and it still doesn't work, and when I installed it, it complains about "possible not finding firmware /lib/nvidia.... for nouveau". (see below) Code: update-initramfs: Generating /boot/initrd.img-4.18.5-041805-generic W: Possible missing firmware /lib/firmware/nvidia/gv100/sec2/sig.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/sec2/image.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/sec2/desc.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/nvdec/scrubber.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/sw_method_init.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/sw_bundle_init.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/sw_nonctx.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/sw_ctx.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/gpccs_sig.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/gpccs_data.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/gpccs_inst.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/gpccs_bl.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/fecs_sig.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/fecs_data.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/fecs_inst.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/gr/fecs_bl.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/acr/ucode_unload.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/acr/ucode_load.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/acr/unload_bl.bin for module nouveau W: Possible missing firmware /lib/firmware/nvidia/gv100/acr/bl.bin for module nouveau DMESG from this kernel: [ 3.123458] nouveau 0000:02:00.0: enabling device (0006 -> 0007) [ 3.124175] fb: switching to nouveaufb from EFI VGA [ 3.124515] nouveau 0000:02:00.0: NVIDIA MCP89 (0af100a2) [ 3.140564] nouveau 0000:02:00.0: bios: version 70.89.13.00.00 [ 3.163102] nouveau 0000:02:00.0: fb: 256 MiB stolen system memory [ 3.329183] nouveau 0000:02:00.0: bus: MMIO write of 0000807e FAULT at 100c1c [ 4.668287] nouveau 0000:02:00.0: DRM: VRAM: 256 MiB [ 4.668290] nouveau 0000:02:00.0: DRM: GART: 1048576 MiB [ 4.668297] nouveau 0000:02:00.0: DRM: TMDS table version 2.0 [ 4.668300] nouveau 0000:02:00.0: DRM: DCB version 4.0 [ 4.668305] nouveau 0000:02:00.0: DRM: DCB outp 00: 040001b6 0f220010 [ 4.668309] nouveau 0000:02:00.0: DRM: DCB outp 01: 020112a6 0f220010 [ 4.668312] nouveau 0000:02:00.0: DRM: DCB outp 02: 02011262 00020010 [ 4.668316] nouveau 0000:02:00.0: DRM: DCB conn 00: 00002047 [ 4.668319] nouveau 0000:02:00.0: DRM: DCB conn 01: 00101146 [ 4.705380] nouveau 0000:02:00.0: DRM: MM: using M2MF for buffer copies [ 4.801272] nouveau 0000:02:00.0: DRM: allocated 1920x1080 fb: 0x50000, bo (____ptrval____) [ 4.802060] fbcon: nouveaufb (fb0) is primary device [ 4.920114] nouveau 0000:02:00.0: fb0: nouveaufb frame buffer device [ 4.964058] [drm] Initialized nouveau 1.3.1 20120801 for 0000:02:00.0 on minor 0 [ 30.784569] sddm-greeter[1038]: segfault at 1a ip 00007f16b336d6ce sp 00007fff1701aac0 error 4 in nouveau_dri.so[7f16b312d000+a7d000] [ 85.190414] ksplashqml[1324]: segfault at 1a ip 00007f12b315c6ce sp 00007ffd1cec66d0 error 4 in nouveau_dri.so[7f12b2f1c000+a7d000] [ 96.932346] nouveau 0000:02:00.0: fb: trapped read at 010052e000 on channel -1 [0fedf000 unknown] engine 06 [BAR] client 08 [PFIFO_READ] subclient 01 [IN] reason 0000000b [VRAM_LIMIT] [ 99.523017] sddm-greeter[1546]: segfault at 1a ip 00007f45049696ce sp 00007ffe8b766630 error 4 in nouveau_dri.so[7f4504729000+a7d000] [ 110.586924] sddm-greeter[1589]: segfault at 1a ip 00007fb8d0f346ce sp 00007ffcf758d840 error 4 in nouveau_dri.so[7fb8d0cf4000+a7d000] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1783957 Title: Nouveau crashes at login with Kernel 4.15.0-29 on MacBook Air, so no login screen in a normal sequence To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1783957/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
