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bugzilla-daemon at freedesktop.org

2013-Sep-10 14:58 UTC

[Nouveau] [Bug 69180] New: Delays when using nouveau and switcheroo

https://bugs.freedesktop.org/show_bug.cgi?id=69180

          Priority: medium
            Bug ID: 69180
          Assignee: nouveau at lists.freedesktop.org
           Summary: Delays when using nouveau and switcheroo
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: a0vhv at t-online.de
          Hardware: x86 (IA32)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 85566
  --> https://bugs.freedesktop.org/attachment.cgi?id=85566&action=edit
lspci output

First of all: you did a very good job! Actually I wanted to report an X server
crash and a kernel panic in nouveau/vgaswitcheroo in Ubuntu 13.04, but now that
I installed the latest version of nouveau I see that these bugs are gone!
However, there are still some other bugs in the latest version that I want to
report.

Kernel version: 3.11.0-031100-generic
DRM version: 1.1.0 20060810
Nouveau version: 1.1.1 20120801

I did a out-of-tree compilation using the nouveau snapshot of today.

My notebook (Medion Akoya P6624) uses a Nvidia GeForce GT 425M together with an
Intel HD graphics card. X is not involved in these reports. I always booted to
console and never started X. To make it clear how long a command took to
execute, I used a script that logs to dmesg and syslog when a command started
executing and when it was done. The commands of each report were executed
directly after boot. The output of "cat
/sys/kernel/debug/vgaswitcheroo/switch"
after boot is always
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Pwr:0000:01:00.0

1) Switching the dedicated card off takes 45 seconds and reports some errors

    1.1) Switch dedicated card off:

        dmesg output:
        [  109.787177] Before "echo OFF >
/sys/kernel/debug/vgaswitcheroo/switch"
        [  109.787404] VGA switcheroo: switched nouveau off
        [  109.787476] ACPI Warning: \_SB_.PCI0.P0P1.PEGP._DSM: Argument #4
type mismatch - Found [Buffer], ACPI requires [Package]
(20130517/nsarguments-95)
        [  109.787830] nouveau  [     DRM] suspending fbcon...
        [  109.787836] nouveau  [     DRM] suspending display...
        [  109.787841] nouveau  [     DRM] unpinning framebuffer(s)...
        [  109.787893] nouveau  [     DRM] evicting buffers...
        [  139.807186] nouveau  [     DRM] waiting for kernel channels to go
idle...
        [  154.814513] nouveau E[     DRM] failed to idle channel 0xcccc0001
[DRM]
        [  154.819750] After "echo OFF >
/sys/kernel/debug/vgaswitcheroo/switch"

        "cat /sys/kernel/debug/vgaswitcheroo/switch" output:
        0:IGD:+:Pwr:0000:00:02.0
        1:DIS: :Off:0000:01:00.0

    1.2) Switch dedicated card back on:

        dmesg output:
        [  188.129397] Before "echo ON >
/sys/kernel/debug/vgaswitcheroo/switch"
        [  188.129674] VGA switcheroo: switched nouveau on
        [  188.129765] nouveau  [     DRM] re-enabling device...
        [  188.129783] nouveau  [     DRM] resuming kernel object tree...
        [  188.129871] nouveau  [     DRM] resuming client object trees...
        [  188.129877] nouveau  [     DRM] resuming display...
        [  188.129890] nouveau E[     DRM] Could not pin/map cursor.
        [  188.129980] nouveau E[     DRM] Could not pin/map cursor.
        [  188.135706] After "echo ON >
/sys/kernel/debug/vgaswitcheroo/switch"

        "cat /sys/kernel/debug/vgaswitcheroo/switch" output:
        0:IGD:+:Pwr:0000:00:02.0
        1:DIS: :Pwr:0000:01:00.0


2) Unloading and loading nouveau takes almost a minute (~40s + ~15s) and
reports some errors

    2.1) Unload nouveau:

        dmesg output:
        [   81.873603] Before "modprobe -r nouveau"
        [   96.894475] nouveau E[     DRM] failed to idle channel 0xcccc0000
[DRM]
        [   98.896050] nouveau E[   PFIFO][0000:01:00.0] channel 1 [DRM] kick
timeout
        [  100.897626] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
        [  100.897812] nouveau W[   PFIFO][0000:01:00.0] INTR 0x00000001:
0x00000003
        [  115.906124] nouveau E[     DRM] failed to idle channel 0xcccc0001
[DRM]
        [  117.907634] nouveau E[   PFIFO][0000:01:00.0] channel 0 [DRM] kick
timeout
        [  119.909206] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
        [  119.910780] [TTM] Finalizing pool allocator
        [  119.910790] [TTM] Finalizing DMA pool allocator
        [  119.910871] [TTM] Zone  kernel: Used memory at exit: 0 kiB
        [  119.910877] [TTM] Zone highmem: Used memory at exit: 0 kiB
        [  119.910883] vga_switcheroo: disabled
        [  119.913110] [drm] Module unloaded
        [  119.941120] After "modprobe -r nouveau"

    2.2) Load nouveau:

        dmesg output:
        [  161.070144] Before "modprobe nouveau"
        [  161.145759] MXM: GUID detected in BIOS
        [  161.145810] ACPI Warning: \_SB_.PCI0.GFX0._DSM: Argument #4 type
mismatch - Found [Integer], ACPI requires [Package] (20130517/nsarguments-95)
        [  161.146039] ACPI Warning: \_SB_.PCI0.GFX0._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20130517/nsarguments-95)
        [  161.146226] ACPI Warning: \_SB_.PCI0.P0P1.PEGP._DSM: Argument #4
type mismatch - Found [Integer], ACPI requires [Package]
(20130517/nsarguments-95)
        [  161.146315] ACPI Warning: \_SB_.PCI0.P0P1.PEGP._DSM: Argument #4
type mismatch - Found [Buffer], ACPI requires [Package]
(20130517/nsarguments-95)
        [  161.146418] VGA switcheroo: detected Optimus DSM method
\_SB_.PCI0.P0P1.PEGP handle
        [  161.146980] nouveau  [  DEVICE][0000:01:00.0] BOOT0  : 0x0c1800a1
        [  161.146984] nouveau  [  DEVICE][0000:01:00.0] Chipset: GF108 (NVC1)
        [  161.146987] nouveau  [  DEVICE][0000:01:00.0] Family : NVC0
        [  161.148457] nouveau  [   VBIOS][0000:01:00.0] checking PRAMIN for
image...
        [  161.148466] nouveau  [   VBIOS][0000:01:00.0] ... signature not
found
        [  161.148468] nouveau  [   VBIOS][0000:01:00.0] checking PROM for
image...
        [  161.148523] nouveau  [   VBIOS][0000:01:00.0] ... signature not
found
        [  161.148524] nouveau  [   VBIOS][0000:01:00.0] checking ACPI for
image...
        [  174.524023] nouveau  [   VBIOS][0000:01:00.0] ... appears to be
valid
        [  174.524029] nouveau  [   VBIOS][0000:01:00.0] using image from ACPI
        [  174.524253] nouveau  [   VBIOS][0000:01:00.0] BIT signature found
        [  174.524258] nouveau  [   VBIOS][0000:01:00.0] version 70.08.19.00.21
        [  174.525052] nouveau  [     PFB][0000:01:00.0] RAM type: DDR3
        [  174.525058] nouveau  [     PFB][0000:01:00.0] RAM size: 512 MiB
        [  174.525063] nouveau  [     PFB][0000:01:00.0]    ZCOMP: 0 tags
        [  174.557517] nouveau  [  PTHERM][0000:01:00.0] FAN control: none /
external
        [  174.557528] nouveau  [  PTHERM][0000:01:00.0] fan management:
disabled
        [  174.557533] nouveau  [  PTHERM][0000:01:00.0] internal sensor: yes
        [  174.566347] vga_switcheroo: enabled
        [  174.566659] [TTM] Zone  kernel: Available graphics memory: 426710
kiB
        [  174.566666] [TTM] Zone highmem: Available graphics memory: 1963648
kiB
        [  174.566669] [TTM] Initializing pool allocator
        [  174.566681] [TTM] Initializing DMA pool allocator
        [  174.566705] nouveau  [     DRM] VRAM: 512 MiB
        [  174.566709] nouveau  [     DRM] GART: 1048576 MiB
        [  174.566719] nouveau  [     DRM] TMDS table version 2.0
        [  174.566723] nouveau  [     DRM] DCB version 4.0
        [  174.566729] nouveau  [     DRM] DCB outp 00: 02021300 00000000
        [  174.566735] nouveau  [     DRM] DCB conn 00: 00000040
        [  174.566741] nouveau  [     DRM] DCB conn 01: 00000100
        [  174.566745] nouveau  [     DRM] DCB conn 02: 00002261
        [  174.568326] [drm] Supports vblank timestamp caching Rev 1
(10.10.2010).
        [  174.568331] [drm] No driver support for vblank timestamp query.
        [  174.568337] nouveau  [     DRM] ACPI backlight interface available,
not registering our own
        [  174.568543] nouveau  [     DRM] 3 available performance level(s)
        [  174.568547] nouveau  [     DRM] 0: core 50MHz shader 101MHz memory
135MHz voltage 830mV
        [  174.568549] nouveau  [     DRM] 1: core 202MHz shader 405MHz memory
324MHz voltage 830mV
        [  174.568552] nouveau  [     DRM] 3: core 560MHz shader 1120MHz memory
800MHz voltage 900mV
        [  174.568555] nouveau  [     DRM] c: core 202MHz shader 405MHz memory
324MHz voltage 900mV
        [  174.586084] nouveau  [     DRM] MM: using COPY0 for buffer copies
        [  174.596625] nouveau 0000:01:00.0: No connectors reported connected
with modes
        [  174.596649] [drm] Cannot find any crtc or sizes - going 1024x768
        [  174.619661] nouveau E[    PBUS][0000:01:00.0] MMIO write of
0x00000401 FAULT at 0x002010 [ IBUS TIMEOUT ]
        [  174.711581] nouveau  [     DRM] allocated 1024x768 fb: 0x60000, bo
f653bc00
        [  174.711815] nouveau 0000:01:00.0: fb1: nouveaufb frame buffer device
        [  174.711824] [drm] Initialized nouveau 1.1.1 20120801 for
0000:01:00.0 on minor 1
        [  174.714771] After "modprobe nouveau"

3) Can't switch to dedicated graphics card

    3.1) Switch to Nvidia card

        Result: Screen turns off (including backlight). Everything else still
works, commands entered through the keyboard and SSH are still executed.

        dmesg output:
        [   82.843529] Before "echo DDIS >
/sys/kernel/debug/vgaswitcheroo/switch"
        [   82.989327] nouveau E[     DRM] GPU lockup - switching to software
fbcon
        [   83.196574] fbcon: Remapping primary device, fb1, to tty 1-63
        [   83.207133] i915: switched off
        [   83.688663] After "echo DDIS >
/sys/kernel/debug/vgaswitcheroo/switch"

        "cat /sys/kernel/debug/vgaswitcheroo/switch" output:
        0:IGD: :Off:0000:00:02.0
        1:DIS:+:Pwr:0000:01:00.0

    3.2) Re-enable Intel card

        Result: Backlight turns on again but the screen is black.

        dmesg output:
        [  183.941797] Before "echo ON >
/sys/kernel/debug/vgaswitcheroo/switch"
        [  183.942058] i915: switched on
        [  183.957639] i915 0000:00:02.0: setting latency timer to 64
        [  184.421649] After "echo ON >
/sys/kernel/debug/vgaswitcheroo/switch"

        "cat /sys/kernel/debug/vgaswitcheroo/switch" output:
        0:IGD: :Pwr:0000:00:02.0
        1:DIS:+:Pwr:0000:01:00.0

    3.3) Switch to intel card

    Result: Screen works again.

    dmesg output:
    [  276.129781] Before "echo DIGD >
/sys/kernel/debug/vgaswitcheroo/switch"
    [  276.434822] fbcon: Remapping primary device, fb0, to tty 1-63
    [  276.434829] VGA switcheroo: switched nouveau off
    [  276.434846] ACPI Warning: \_SB_.PCI0.P0P1.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20130517/nsarguments-95)
    [  276.435073] nouveau  [     DRM] suspending fbcon...
    [  276.435077] nouveau  [     DRM] suspending display...
    [  276.435080] nouveau  [     DRM] unpinning framebuffer(s)...
    [  276.435128] nouveau  [     DRM] evicting buffers...
    [  306.454470] nouveau  [     DRM] waiting for kernel channels to go
idle...
    [  321.461603] nouveau E[     DRM] failed to idle channel 0xcccc0001 [DRM]
    [  321.466829] After "echo DIGD >
/sys/kernel/debug/vgaswitcheroo/switch"

    "cat /sys/kernel/debug/vgaswitcheroo/switch" output:
    0:IGD:+:Pwr:0000:00:02.0
    1:DIS: :Off:0000:01:00.0

    AFAIK the Nvidia graphics card sends its output to the Intel card, which is
responsible for the graphics output to the screen. So I guess the problem is
that switcheroo disables the Intel card which causes the graphics output to
stop.

I would be glad if someone could take a look at these issues. Please let me
know if I should supply more logs or try out a different version.

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bugzilla-daemon at freedesktop.org

2013-Sep-10 15:00 UTC

head link

[Nouveau] [Bug 69180] Delays when using nouveau and switcheroo

https://bugs.freedesktop.org/show_bug.cgi?id=69180

--- Comment #1 from janh <a0vhv at t-online.de> ---
Created attachment 85567
  --> https://bugs.freedesktop.org/attachment.cgi?id=85567&action=edit
dmesg output of switching dedicated GPU off and on

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bugzilla-daemon at freedesktop.org

2013-Sep-10 15:01 UTC

head link

[Nouveau] [Bug 69180] Delays when using nouveau and switcheroo

https://bugs.freedesktop.org/show_bug.cgi?id=69180

--- Comment #2 from janh <a0vhv at t-online.de> ---
Created attachment 85568
  --> https://bugs.freedesktop.org/attachment.cgi?id=85568&action=edit
dmesg output of unloading and loading nouveau

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bugzilla-daemon at freedesktop.org

2013-Sep-10 15:03 UTC

head link

[Nouveau] [Bug 69180] Delays when using nouveau and switcheroo

https://bugs.freedesktop.org/show_bug.cgi?id=69180

--- Comment #3 from janh <a0vhv at t-online.de> ---
Created attachment 85569
  --> https://bugs.freedesktop.org/attachment.cgi?id=85569&action=edit
dmesg output of switching to Nvidia GPU, turning Intel card on and switching
back to Intel card

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bugzilla-daemon at freedesktop.org

2013-Sep-10 15:14 UTC

head link

[Nouveau] [Bug 69180] [NVC1] Delays when using nouveau and switcheroo

https://bugs.freedesktop.org/show_bug.cgi?id=69180

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Delays when using nouveau   |[NVC1] Delays when using
                   |and switcheroo              |nouveau and switcheroo

--- Comment #4 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #0)> AFAIK the Nvidia graphics card sends its output to the Intel card, which is
> responsible for the graphics output to the screen. So I guess the problem
is
> that switcheroo disables the Intel card which causes the graphics output to
> stop.
If you don't have a hardware mux, stay away from vgaswitcheroo. Take a look
at
http://nouveau.freedesktop.org/wiki/Optimus/.

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bugzilla-daemon at freedesktop.org

2013-Nov-30 06:39 UTC

head link

[Nouveau] [Bug 69180] [NVC1] Delays when using nouveau and switcheroo

https://bugs.freedesktop.org/show_bug.cgi?id=69180

--- Comment #5 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Please try this with 3.11.10 or 3.12.2 or 3.13-rc2. There was a patch that
could help NVC1 cards included in all 3 of those (well, it went into 3.13-rc1).
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=13d2b35a065399
. Note that 3.12+ also have runtime pm for optimus setups, which will
automatically turn the nvidia card on/off depending on whether it's being
used
(in theory).

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bugzilla-daemon at freedesktop.org

2019-Dec-04 08:36 UTC

head link

[Nouveau] [Bug 69180] [NVC1] Delays when using nouveau and switcheroo

https://bugs.freedesktop.org/show_bug.cgi?id=69180

Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #6 from Martin Peres <martin.peres at free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance:
https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/55.

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