Re: Nouveau DRM failure on 5120x1440 screen with 5.8/5.9 kernel

2020-10-14 Thread Byron Stanoszek 

On Tue, 13 Oct 2020, Byron Stanoszek wrote:


I'm having a problem with both the 5.8 and 5.9 kernels using the nouveau DRM
driver. I have a laptop with a VGA card (specs below) connected to a
5120x1440 screen. At boot time, the card correctly detects the screen, tries
to allocate fbdev fb0, then the video hangs completely for 15-30 seconds
until it goes blank.


This message eventually displays after a while:

Workqueue: nvkm-disp nv50_disp_super
RIP: 0010:nv50_disp_super_2_2+0x1b0/0x470
Code: 69 00 00 48 69 c0 d3 4d 62 10 48 c1 e8 26 49 89 c5 0f b7 43 40 44 89 e9 8d 44 
02 f9 0f b7 53 46 29 d0 31 d2 48 98 49 0f af c4 <48> f7 f1 48 89 c6 0f b7 43 4e 
0f b7 53 4c 83 e8 19 29 d0 31 d2 48
RSP: 0018:c95e3e08 EFLAGS: 00010206
RAX:  RBX: 88841b08ed20 RCX: 
RDX:  RSI: c90003614200 RDI: 820c1140
RBP: 88841b202060 R08:  R09: 61ce
R10: 0018 R11: 0018 R12: 
R13:  R14: 88841b96b800 R15: 88841b975000
FS:  () GS:88841dc0() knlGS:
CS:  0010 DS:  ES:  CR0: 80050033
CR2: 7f922e61e000 CR3: 0240a004 CR4: 001706b0
Call Trace:
 ? nvkm_dp_disable+0x5d/0x70
 ? nv50_disp_super+0x137/0x220
 ? process_one_work+0x19c/0x2c0
 ? worker_thread+0x48/0x350
 ? process_one_work+0x2c0/0x2c0
 ? kthread+0x129/0x150
 ? __kthread_create_worker+0x100/0x100
 ? ret_from_fork+0x22/0x30
---[ end trace dbb0d14fd1ddb445 ]---
nouveau :01:00.0: DRM: core notifier timeout

Thanks,
 -Byron

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Nouveau DRM failure on 5120x1440 screen with 5.8/5.9 kernel

2020-10-14 Thread Byron Stanoszek 

I'm having a problem with both the 5.8 and 5.9 kernels using the nouveau DRM
driver. I have a laptop with a VGA card (specs below) connected to a 5120x1440
screen. At boot time, the card correctly detects the screen, tries to allocate
fbdev fb0, then the video hangs completely for 15-30 seconds until it goes
blank.

This used to work in Linux 5.7 and earlier, although it allocated a 3840x1080
fb instead of a 5120x1440. I've attached the full dmesg. I tried commands like
video=DP-2:3840x1080 but it doesn't help.

Linux 5.8 boots without hanging if the laptop is not connected to the 5120x1440
screen.


PCI specs:

01:00.0 0300: 10de:0dfc (rev a1)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [NVS 5200M] (rev 
a1)


xrandr available resolutions reported (from Linux 5.7 using Xorg):

Screen 0: minimum 320 x 200, current 5120 x 1440, maximum 16384 x 16384
LVDS-1 unknown connection (normal left inverted right x axis y axis)
   1600x900  59.99 +  40.00
   5120x1440 60.00
   1360x1020 73.97
   1152x864  59.97
   1024x768  59.95
   800x600   59.96
   640x480   59.94
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 connected primary 5120x1440+0+0 (normal left inverted right x axis y axis) 
1200mm x 340mm panning 5120x1440+0+0
   3840x1080 59.97 +
   5120x1440 29.98*
   2560x1080 60.0059.9459.98
   1920x1080 60.0060.0050.0059.94
   1920x1080i60.0050.0059.94
   1600x1200 60.00
   1280x1024 75.0260.02
   1280x800  59.81
   1152x864  75.00
   1280x720  60.0050.0059.94
   1024x768  75.0360.00
   800x600   75.0060.32
   720x576   50.00
   720x480   60.0059.94
   640x480   75.0060.0059.94
   720x400   70.08
HDMI-1 disconnected (normal left inverted right x axis y axis)
VGA-1 disconnected (normal left inverted right x axis y axis)

I'm currently using 5120x1440@30. 60 Hz isn't available. But look below:


xrandr resolutions from Linux 5.9 (even though screen is still blank):

Screen 0: minimum 320 x 200, current 5120 x 1440, maximum 16384 x 16384
LVDS-1 unknown connection (normal left inverted right x axis y axis)
   1600x900  59.99 +  40.00
   5120x1440 60.00
   1360x1020 73.97
   1152x864  59.97
   1024x768  59.95
   800x600   59.96
   640x480   59.94
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 connected primary 5120x1440+0+0 (normal left inverted right x axis y axis) 
1200mm x 340mm panning 5120x1440+0+0
   5120x1440 59.98 +  29.98*
   3840x1080 59.97 +
   2560x1080 60.0059.9459.98
   1920x1080 60.0060.0050.0059.94
   1920x1080i60.0050.0059.94
   1600x1200 60.00
   1280x1024 75.0260.02
   1280x800  59.81
   1152x864  75.00
   1280x720  60.0050.0059.94
   1024x768  75.0360.00
   800x600   75.0060.32
   720x576   50.00
   720x480   60.0059.94
   640x480   75.0060.0059.94
   720x400   70.08
HDMI-1 disconnected (normal left inverted right x axis y axis)
VGA-1 disconnected (normal left inverted right x axis y axis)


Let me know if you need additional debug information/etc.

Thanks,
 -Byron
microcode: microcode updated early to revision 0x21, date = 2019-02-13
Linux version 5.9.0 (r...@iss.comtime.lan) (gcc (Gentoo 10.2.0-r2 p3) 10.2.0, 
GNU ld (Gentoo 2.35.1 p1) 2.35.1) #2 SMP PREEMPT Tue Oct 13 14:54:36 EDT 2020
Command line: auto BOOT_IMAGE=cti ro root=801 cti
KERNEL supported cpus:
  Intel GenuineIntel
x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 
'standard' format.
BIOS-provided physical RAM map:
BIOS-e820: [mem 0x-0x0009e7ff] usable
BIOS-e820: [mem 0x0009e800-0x0009] reserved
BIOS-e820: [mem 0x000e-0x000f] reserved
BIOS-e820: [mem 0x0010-0xc9f09fff] usable
BIOS-e820: [mem 0xc9f0a000-0xc9ff] reserved
BIOS-e820: [mem 0xca00-0xca752fff] usable
BIOS-e820: [mem 0xca753000-0xca7f] reserved
BIOS-e820: [mem 0xca80-0xcafb1fff] usable
BIOS-e820: [mem 0xcafb2000-0xcaff] ACPI data
BIOS-e820: [mem 0xcb00-0xcc6fbfff] usable
BIOS-e820: [mem 0xcc6fc000-0xcc7f] ACPI NVS
BIOS-e820: [mem 0xcc80-0xcdda0fff] usable
BIOS-e820: [mem 0xcdda1000-0xce7a4fff] reserved
BIOS-e820: [mem 0xce7a5000-0xce7e7fff] ACPI NVS
BIOS-e820: [mem 0xce7e8000-0xcf2b2fff] usable
BIOS-e820: [mem 0xcf2b3000-0xcf7e] reserved
BIOS-e820: [mem