Re: Regression in 5.15 in nouveau

[Thorsten Leemhuis <regressions@leemhuis.info>]

[TLDR: adding this regression to regzbot; most of this mail is compiled
from a few templates paragraphs some of you will have seen aready.]

Hi, this is your Linux kernel regression tracker speaking.

Top-posting for once, to make this easy accessible to everyone.

Adding the regression mailing list to the list of recipients, as it
should be in the loop for all regressions, as explained here:
https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html

To be sure this issue doesn't fall through the cracks unnoticed, I'm
adding it to regzbot, my Linux kernel regression tracking bot:

#regzbot ^introduced 3e1ad79bf66165bdb2baca3989f9227939241f11
#regzbot title drm: nouveau: annoying black flickering in some
applications with KDE Plasma with Xorg
#regzbot ignore-activity

Reminder: when fixing the issue, please add a 'Link:' tag with the URL
to the report (the parent of this mail), then regzbot will automatically
mark the regression as resolved once the fix lands in the appropriate
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Sending this to everyone that got the initial report, to make all aware
of the tracking. I also hope that messages like this motivate people to
directly get at least the regression mailing list and ideally even
regzbot involved when dealing with regressions, as messages like this
wouldn't be needed then.

Don't worry, I'll send further messages wrt to this regression just to
the lists (with a tag in the subject so people can filter them away), as
long as they are intended just for regzbot. With a bit of luck no such
messages will be needed anyway.

Ciao, Thorsten, your Linux kernel regression tracker.

P.S.: As a Linux kernel regression tracker I'm getting a lot of reports
on my table. I can only look briefly into most of them. Unfortunately
therefore I sometimes will get things wrong or miss something important.
I hope that's not the case here; if you think it is, don't hesitate to
tell me about it in a public reply. That's in everyone's interest, as
what I wrote above might be misleading to everyone reading this; any
suggestion I gave they thus might sent someone reading this down the
wrong rabbit hole, which none of us wants.

BTW, I have no personal interest in this issue, which is tracked using
regzbot, my Linux kernel regression tracking bot
(https://linux-regtracking.leemhuis.info/regzbot/). I'm only posting
this mail to get things rolling again and hence don't need to be CC on
all further activities wrt to this regression.


On 04.12.21 17:40, Stefan Fritsch wrote:
> Hi,
> 
> when updating from 5.14 to 5.15 on a system with NVIDIA GP108 [GeForce
> GT 1030] (NV138) and Ryzen 9 3900XT using kde/plasma on X (not wayland),
> there is a regression: There is now some annoying black flickering in
> some applications, for example thunderbird, firefox, or mpv. It mostly
> happens when scrolling or when playing video. Only the window of the
> application flickers, not the whole screen. But the flickering is not
> limited to the scrolled area: for example in firefox the url and
> bookmark bars flicker, too, not only the web site. I have bisected the
> issue to this commit:
> 
> commit 3e1ad79bf66165bdb2baca3989f9227939241f11 (HEAD)
> Author: Christian König <christian.koenig@amd.com>
> Date:   Sun Jun 6 11:50:15 2021 +0200
> 
>     drm/nouveau: always wait for the exclusive fence
> 
>     Drivers also need to to sync to the exclusive fence when
>     a shared one is present.
> 
>     Signed-off-by: Christian König <christian.koenig@amd.com>
>     Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>     Link:
> https://patchwork.freedesktop.org/patch/msgid/20210702111642.17259-4-christian.koenig@amd.com
> 
> 
> 
> This sounds like performance is impacted severely by that commit. Can
> this be fixed somehow? A partial dmesg is below.
> 
> Cheers,
> Stefan
> 
> 
> dmesg |grep -i -e drm -e dri -e nvidia -e nouveau -e fb
> [    0.000000] BIOS-e820: [mem 0x00000000bc552000-0x00000000bc8fbfff]
> reserved
> [    0.004971] ACPI: XSDT 0x00000000BCFB0728 0000CC (v01 ALASKA A M I
> 01072009 AMI  01000013)
> [    0.010838] PM: hibernation: Registered nosave memory: [mem
> 0xbc552000-0xbc8fbfff]
> [    0.204873] Performance Events: Fam17h+ core perfctr, AMD PMU driver.
> [    0.292761] Registering PCC driver as Mailbox controller
> [    0.292761] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
> [    0.518295] pci 0000:06:00.0: reg 0x10: [mem 0xfb000000-0xfbffffff]
> [    0.519132] pci 0000:06:00.1: [10de:0fb8] type 00 class 0x040300
> [    0.519653] pci 0000:00:03.1:   bridge window [mem
> 0xfb000000-0xfc0fffff]
> [    0.549101] pci 0000:00:03.1:   bridge window [mem
> 0xfb000000-0xfc0fffff]
> [    0.550994] pci_bus 0000:06: resource 1 [mem 0xfb000000-0xfc0fffff]
> [    0.561285] Block layer SCSI generic (bsg) driver version 0.4 loaded
> (major 250)
> [    0.564152] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
> [    0.570870] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [    0.571531] AMD-Vi: AMD IOMMUv2 driver by Joerg Roedel <jroedel@suse.de>
> [    0.988343] microcode: Microcode Update Driver: v2.2.
> [    1.112435] ACPI: OSL: Resource conflict; ACPI support missing from
> driver?
> [    1.114174] usbcore: registered new interface driver usbfs
> [    1.114331] usbcore: registered new interface driver hub
> [    1.114599] usbcore: registered new device driver usb
> [    2.373857] hid: raw HID events driver (C) Jiri Kosina
> [    2.378553] usbcore: registered new interface driver usbhid
> [    2.378641] usbhid: USB HID core driver
> [    2.581069] ata3.00: supports DRM functions and may not be fully
> accessible
> [    2.582388] ata3.00: supports DRM functions and may not be fully
> accessible
> [    3.371574] ata5.00: supports DRM functions and may not be fully
> accessible
> [    3.396636] ata5.00: supports DRM functions and may not be fully
> accessible
> [    4.159005] sr 1:0:0:0: [sr0] scsi3-mmc drive: 48x/48x writer dvd-ram
> cd/rw xa/form2 cdda tray
> [    4.159120] cdrom: Uniform CD-ROM driver Revision: 3.20
> [    5.936017] systemd[1]: Starting Load Kernel Module drm...
> [    5.957038] systemd[1]: modprobe@drm.service: Deactivated successfully.
> [    5.957238] systemd[1]: Finished Load Kernel Module drm.
> [    6.104901] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver
> [    6.122007] usbcore: registered new device driver apple-mfi-fastcharge
> [    6.213866] input: HDA NVidia HDMI/DP,pcm=3 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input8
> [    6.236581] AMD64 EDAC driver v3.5.0
> [    6.259473] input: HDA NVidia HDMI/DP,pcm=7 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input9
> [    6.259631] input: HDA NVidia HDMI/DP,pcm=8 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input10
> [    6.260559] input: HDA NVidia HDMI/DP,pcm=9 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input11
> [    6.260913] input: HDA NVidia HDMI/DP,pcm=10 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input12
> [    6.485220] nouveau 0000:06:00.0: vgaarb: deactivate vga console
> [    6.486484] nouveau 0000:06:00.0: NVIDIA GP108 (138000a1)
> [    6.612994] nouveau 0000:06:00.0: bios: version 86.08.24.00.23
> [    6.617303] nouveau 0000:06:00.0: pmu: firmware unavailable
> [    6.621410] nouveau 0000:06:00.0: fb: 2048 MiB GDDR5
> [    6.653892] nouveau 0000:06:00.0: DRM: VRAM: 2048 MiB
> [    6.653895] nouveau 0000:06:00.0: DRM: GART: 536870912 MiB
> [    6.653897] nouveau 0000:06:00.0: DRM: BIT table 'A' not found
> [    6.653899] nouveau 0000:06:00.0: DRM: BIT table 'L' not found
> [    6.653900] nouveau 0000:06:00.0: DRM: TMDS table version 2.0
> [    6.653902] nouveau 0000:06:00.0: DRM: DCB version 4.1
> [    6.653904] nouveau 0000:06:00.0: DRM: DCB outp 00: 01800346 04600010
> [    6.653906] nouveau 0000:06:00.0: DRM: DCB outp 01: 01000342 00020010
> [    6.653908] nouveau 0000:06:00.0: DRM: DCB outp 02: 01011352 00020020
> [    6.653909] nouveau 0000:06:00.0: DRM: DCB conn 00: 00001046
> [    6.653911] nouveau 0000:06:00.0: DRM: DCB conn 01: 00002161
> [    6.654295] nouveau 0000:06:00.0: DRM: MM: using COPY for buffer copies
> [    6.655460] snd_hda_intel 0000:06:00.1: bound 0000:06:00.0 (ops
> nv50_audio_component_bind_ops [nouveau])
> [    6.828018] nouveau 0000:06:00.0: DRM: allocated 3840x2160 fb:
> 0x200000, bo 000000001a41f1fe
> [    6.828086] fbcon: nouveau (fb0) is primary device
> [    6.915486] nouveau 0000:06:00.0: [drm] fb0: nouveau frame buffer device
> [    6.939244] [drm] Initialized nouveau 1.3.1 20120801 for 0000:06:00.0
> on minor 0
> [   11.338075] audit: type=1400 audit(1638634273.245:6):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="nvidia_modprobe" pid=1354 comm="apparmor_parser"
> [   11.338078] audit: type=1400 audit(1638634273.245:7):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="nvidia_modprobe//kmod" pid=1354 comm="apparmor_parser"
> [   11.479123] RTL8226B_RTL8221B 2.5Gbps PHY r8169-500:00: attached PHY
> driver (mii_bus:phy_addr=r8169-500:00, irq=MAC)
> stf@k:~/comp/linux/linux$ sudo dmesg |less
> stf@k:~/comp/linux/linux$ sudo dmesg |grep -i -e drm -e dri -e nvidia -e
> nouveau -e fb
> [    0.000000] BIOS-e820: [mem 0x00000000bc552000-0x00000000bc8fbfff]
> reserved
> [    0.004971] ACPI: XSDT 0x00000000BCFB0728 0000CC (v01 ALASKA A M I
> 01072009 AMI  01000013)
> [    0.010838] PM: hibernation: Registered nosave memory: [mem
> 0xbc552000-0xbc8fbfff]
> [    0.204873] Performance Events: Fam17h+ core perfctr, AMD PMU driver.
> [    0.292761] Registering PCC driver as Mailbox controller
> [    0.292761] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
> [    0.518295] pci 0000:06:00.0: reg 0x10: [mem 0xfb000000-0xfbffffff]
> [    0.519132] pci 0000:06:00.1: [10de:0fb8] type 00 class 0x040300
> [    0.519653] pci 0000:00:03.1:   bridge window [mem
> 0xfb000000-0xfc0fffff]
> [    0.549101] pci 0000:00:03.1:   bridge window [mem
> 0xfb000000-0xfc0fffff]
> [    0.550994] pci_bus 0000:06: resource 1 [mem 0xfb000000-0xfc0fffff]
> [    0.561285] Block layer SCSI generic (bsg) driver version 0.4 loaded
> (major 250)
> [    0.564152] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
> [    0.570870] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [    0.571531] AMD-Vi: AMD IOMMUv2 driver by Joerg Roedel <jroedel@suse.de>
> [    0.988343] microcode: Microcode Update Driver: v2.2.
> [    1.112435] ACPI: OSL: Resource conflict; ACPI support missing from
> driver?
> [    1.114174] usbcore: registered new interface driver usbfs
> [    1.114331] usbcore: registered new interface driver hub
> [    1.114599] usbcore: registered new device driver usb
> [    2.373857] hid: raw HID events driver (C) Jiri Kosina
> [    2.378553] usbcore: registered new interface driver usbhid
> [    2.378641] usbhid: USB HID core driver
> [    2.581069] ata3.00: supports DRM functions and may not be fully
> accessible
> [    2.582388] ata3.00: supports DRM functions and may not be fully
> accessible
> [    3.371574] ata5.00: supports DRM functions and may not be fully
> accessible
> [    3.396636] ata5.00: supports DRM functions and may not be fully
> accessible
> [    4.159005] sr 1:0:0:0: [sr0] scsi3-mmc drive: 48x/48x writer dvd-ram
> cd/rw xa/form2 cdda tray
> [    4.159120] cdrom: Uniform CD-ROM driver Revision: 3.20
> [    5.936017] systemd[1]: Starting Load Kernel Module drm...
> [    5.957038] systemd[1]: modprobe@drm.service: Deactivated successfully.
> [    5.957238] systemd[1]: Finished Load Kernel Module drm.
> [    6.104901] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver
> [    6.122007] usbcore: registered new device driver apple-mfi-fastcharge
> [    6.213866] input: HDA NVidia HDMI/DP,pcm=3 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input8
> [    6.236581] AMD64 EDAC driver v3.5.0
> [    6.259473] input: HDA NVidia HDMI/DP,pcm=7 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input9
> [    6.259631] input: HDA NVidia HDMI/DP,pcm=8 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input10
> [    6.260559] input: HDA NVidia HDMI/DP,pcm=9 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input11
> [    6.260913] input: HDA NVidia HDMI/DP,pcm=10 as
> /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input12
> [    6.485220] nouveau 0000:06:00.0: vgaarb: deactivate vga console
> [    6.486484] nouveau 0000:06:00.0: NVIDIA GP108 (138000a1)
> [    6.612994] nouveau 0000:06:00.0: bios: version 86.08.24.00.23
> [    6.617303] nouveau 0000:06:00.0: pmu: firmware unavailable
> [    6.621410] nouveau 0000:06:00.0: fb: 2048 MiB GDDR5
> [    6.653892] nouveau 0000:06:00.0: DRM: VRAM: 2048 MiB
> [    6.653895] nouveau 0000:06:00.0: DRM: GART: 536870912 MiB
> [    6.653897] nouveau 0000:06:00.0: DRM: BIT table 'A' not found
> [    6.653899] nouveau 0000:06:00.0: DRM: BIT table 'L' not found
> [    6.653900] nouveau 0000:06:00.0: DRM: TMDS table version 2.0
> [    6.653902] nouveau 0000:06:00.0: DRM: DCB version 4.1
> [    6.653904] nouveau 0000:06:00.0: DRM: DCB outp 00: 01800346 04600010
> [    6.653906] nouveau 0000:06:00.0: DRM: DCB outp 01: 01000342 00020010
> [    6.653908] nouveau 0000:06:00.0: DRM: DCB outp 02: 01011352 00020020
> [    6.653909] nouveau 0000:06:00.0: DRM: DCB conn 00: 00001046
> [    6.653911] nouveau 0000:06:00.0: DRM: DCB conn 01: 00002161
> [    6.654295] nouveau 0000:06:00.0: DRM: MM: using COPY for buffer copies
> [    6.655460] snd_hda_intel 0000:06:00.1: bound 0000:06:00.0 (ops
> nv50_audio_component_bind_ops [nouveau])
> [    6.828018] nouveau 0000:06:00.0: DRM: allocated 3840x2160 fb:
> 0x200000, bo 000000001a41f1fe
> [    6.828086] fbcon: nouveau (fb0) is primary device
> [    6.915486] nouveau 0000:06:00.0: [drm] fb0: nouveau frame buffer device
> [    6.939244] [drm] Initialized nouveau 1.3.1 20120801 for 0000:06:00.0
> on minor 0
> [   11.338075] audit: type=1400 audit(1638634273.245:6):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="nvidia_modprobe" pid=1354 comm="apparmor_parser"
> [   11.338078] audit: type=1400 audit(1638634273.245:7):
> apparmor="STATUS" operation="profile_load" profile="unconfined"
> name="nvidia_modprobe//kmod" pid=1354 comm="apparmor_parser"
> [   11.479123] RTL8226B_RTL8221B 2.5Gbps PHY r8169-500:00: attached PHY
> driver (mii_bus:phy_addr=r8169-500:00, irq=MAC)
>