Comment 43 for bug 1697556

Your question:
"so what's the result on v4.12-rc1, without "nomodeset"?"

Short answer: It does not freeze.

Detailed answer:
With v4.12-rc1, by using the default kernel arguments (i.e. without "nomodeset"), it does not freeze. It shows the login screen on the closed laptop, which you pointed out is related to i915.

The kern.log shows following nouveau related output.

Sep 27 09:37:15 computername kernel: [ 3.239682] nouveau: detected PR support, will not use DSM
Sep 27 09:37:15 computername kernel: [ 3.239698] nouveau 0000:01:00.0: enabling device (0006 -> 0007)
Sep 27 09:37:15 computername kernel: [ 3.239831] nouveau 0000:01:00.0: NVIDIA GP107 (137000a1)
Sep 27 09:37:15 computername kernel: [ 3.245638] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
Sep 27 09:37:15 computername kernel: [ 3.248707] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_01.bin (v1.1)
Sep 27 09:37:15 computername kernel: [ 3.269575] nouveau 0000:01:00.0: bios: version 86.07.3e.00.1c
Sep 27 09:37:15 computername kernel: [ 3.269993] nouveau 0000:01:00.0: Direct firmware load for nvidia/gp107/gr/sw_nonctx.bin failed with error -2
Sep 27 09:37:15 computername kernel: [ 3.269995] nouveau 0000:01:00.0: gr: failed to load gr/sw_nonctx
Sep 27 09:37:15 computername kernel: [ 3.269999] nouveau 0000:01:00.0: gr ctor failed, -2
Sep 27 09:37:15 computername kernel: [ 3.270003] nouveau: probe of 0000:01:00.0 failed with error -2

Please see attached "kernel.log.4.12-rc1WithDefaultKernelArguments.log" for details.