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

Tue Sep 10 07:58:07 PDT 2013

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:.&checktime(0000,00,02,':').0
1:DIS: :Pwr:.&checktime(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:.&checktime(0000,00,02,':').0
 1:DIS: :Off:.&checktime(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:.&checktime(0000,00,02,':').0
 1:DIS: :Pwr:.&checktime(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][.&checktime(0000,01,00,':').0] channel 1 [DRM] kick
timeout
 [ 100.897626] nouveau E[ PFIFO][.&checktime(0000,01,00,':').0] playlist update failed
 [ 100.897812] nouveau W[ PFIFO][.&checktime(0000,01,00,':').0] INTR 0x00000001:
0x00000003
 [ 115.906124] nouveau E[ DRM] failed to idle channel 0xcccc0001
[DRM]
 [ 117.907634] nouveau E[ PFIFO][.&checktime(0000,01,00,':').0] channel 0 [DRM] kick
timeout
 [ 119.909206] nouveau E[ PFIFO][.&checktime(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][.&checktime(0000,01,00,':').0] BOOT0 : 0x0c1800a1
 [ 161.146984] nouveau [ DEVICE][.&checktime(0000,01,00,':').0] Chipset: GF108 (NVC1)
 [ 161.146987] nouveau [ DEVICE][.&checktime(0000,01,00,':').0] Family : NVC0
 [ 161.148457] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] checking PRAMIN for
image...
 [ 161.148466] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] ... signature not
found
 [ 161.148468] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] checking PROM for
image...
 [ 161.148523] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] ... signature not
found
 [ 161.148524] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] checking ACPI for
image...
 [ 174.524023] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] ... appears to be
valid
 [ 174.524029] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] using image from ACPI
 [ 174.524253] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] BIT signature found
 [ 174.524258] nouveau [ VBIOS][.&checktime(0000,01,00,':').0] version 70.08.19.00.21
 [ 174.525052] nouveau [ PFB][.&checktime(0000,01,00,':').0] RAM type: DDR3
 [ 174.525058] nouveau [ PFB][.&checktime(0000,01,00,':').0] RAM size: 512 MiB
 [ 174.525063] nouveau [ PFB][.&checktime(0000,01,00,':').0] ZCOMP: 0 tags
 [ 174.557517] nouveau [ PTHERM][.&checktime(0000,01,00,':').0] FAN control: none /
external
 [ 174.557528] nouveau [ PTHERM][.&checktime(0000,01,00,':').0] fan management:
disabled
 [ 174.557533] nouveau [ PTHERM][.&checktime(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 .&checktime(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][.&checktime(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 .&checktime(0000,01,00,':').0: fb1: nouveaufb frame buffer device
 [ 174.711824] [drm] Initialized nouveau 1.1.1 20120801 for
.&checktime(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:.&checktime(0000,00,02,':').0
 1:DIS:+:Pwr:.&checktime(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 .&checktime(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:.&checktime(0000,00,02,':').0
 1:DIS:+:Pwr:.&checktime(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:.&checktime(0000,00,02,':').0
 1:DIS: :Off:.&checktime(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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