Nouveau - Jun 2016 - [Bug 96737] New: G98: LightDM 1 : 0 Nouveau

https://bugs.freedesktop.org/show_bug.cgi?id=96737

            Bug ID: 96737
           Summary: G98: LightDM 1 : 0 Nouveau
           Product: xorg
           Version: git
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: pomidorabelisima at gmail.com
        QA Contact: xorg-team at lists.x.org
                CC: eric.koegel at gmail.com, robert.ancell at gmail.com

Created attachment 124789
  --> https://bugs.freedesktop.org/attachment.cgi?id=124789&action=edit
nouveau log

LightDM - Light Display Manager -breaks- Nouveau - Linux kernel KMS driver

Breakage starts with:
https://bazaar.launchpad.net/~lightdm-team/lightdm/1.18/revision/2319
preventing the use of upgrades - lightdm 1.18.2, 1.19.1, 1.19.2, ...

Also tested with:
4.7.0-0.rc5.git1.1.fc25.x86_64
and
https://github.com/skeggsb/nouveau.git
commit bd320d9b0ee2f2443f7568e06bdc33a35cfb24ea
Author: Ben Skeggs <bskeggs at redhat.com>
Date:   Mon Jun 27 16:49:24 2016 +1000
...

How to reproduce:
Re-log
or
Swith User, afterwards Re-log
via Xfce session manager

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|G98: LightDM 1 : 0 Nouveau  |[NV98] DISP error with
                   |                            |INVALID_STATE

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--- Comment #1 from poma <pomidorabelisima at gmail.com> ---
s/Swith User/Switch User/

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--- Comment #2 from poma <pomidorabelisima at gmail.com> ---
For comparison,
with qxl.ko (QEMU) and vboxvideo.ko (VirtualBox),
no problem whatsoever.

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[NV98] DISP error with      |[NV98] breaks Login /
                   |INVALID_STATE               |SwitchToGreeter /
                   |                            |SwitchToUser

--- Comment #3 from poma <pomidorabelisima at gmail.com> ---

With mesa-12.0.0-rc4 nouveau is more robust - no disp: ERROR

However, the original problem is still there,
nouveau breaks overall Login/SwitchToGreeter/SwitchToUser stanza,
shuffles sessions/VTNrs

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #124789|0                           |1
        is obsolete|                            |

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--- Comment #4 from poma <pomidorabelisima at gmail.com> ---

Test compilation:
http://goo.gl/Gm4ffO
iso/


How to test:
0. Boot System
1. Logi In
2. Switch User
3. Unlock
4. Log Out
5. Log In ?

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--- Comment #5 from poma <pomidorabelisima at gmail.com> ---

VT switching - with disabled acceleration, works


/var/log/Xorg.0.log
Kernel command line: ... nouveau.noaccel=1
(EE) NOUVEAU(0): Error initialising acceleration.  Falling back to NoAccel
(**) NOUVEAU(0): [COPY] acceleration disabled

glxinfo:
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

/etc/X11/xorg.conf.d/nouveau.conf
Section "Device"
        Identifier "video0"
        Driver "nouveau"
        Option "NoAccel" "on"
EndSection

/var/log/Xorg.0.log
(**) NOUVEAU(0): Option "NoAccel" "on"
(**) NOUVEAU(0): Acceleration disabled
(**) NOUVEAU(0): [COPY] acceleration disabled

glxinfo:
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

/etc/X11/xorg.conf.d/nouveau.conf
Section "Device"
        Identifier "video0"
        Driver "nouveau"
        Option "AccelMethod" "none"
EndSection

/var/log/Xorg.0.log
(**) NOUVEAU(0): Option "AccelMethod" "none"
(**) NOUVEAU(0): [COPY] acceleration disabled

glxinfo:
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)

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--- Comment #6 from poma <pomidorabelisima at gmail.com> ---

What in acceleration code can (as is) brake proper VT switching?

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--- Comment #7 from poma <pomidorabelisima at gmail.com> ---
Also, the LightDM thread is here:
https://lists.freedesktop.org/archives/lightdm/2016-July/001000.html

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[NV98] breaks Login /       |[NV98] Xsession Login
                   |SwitchToGreeter /           |breakage - SwitchToGreeter
                   |SwitchToUser                |/ SwitchToUser related

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--- Comment #8 from poma <pomidorabelisima at gmail.com> ---

w/ modeset sameo

/etc/X11/xorg.conf.d/modeset.conf
Section "Device"
        Identifier "video0"
        Driver "modesetting"
        Option "AccelMethod" "none"
EndSection

/var/log/Xorg.0.log
(**) modeset(0): Option "AccelMethod" "none"

glxinfo:
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.8, 128 bits)


What in Acceleration brakes VT switching?

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--- Comment #9 from poma <pomidorabelisima at gmail.com> ---

Of course, the same with glx disabled

/etc/X11/xorg.conf.d/glx.conf
Section "Module"
        Disable "glx"
EndSection

/var/log/Xorg.0.log
(WW) "glx" will not be loaded unless you've specified it to be
loaded
elsewhere.
(II) "glx" will be loaded even though the default is to disable it.
(==) NOUVEAU(0): GLX sync to VBlank enabled.

xfwm4-WARNING **: GLX extension missing, GLX support disabled.

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[NV98] Xsession Login       |[GLX] Xsession Login
                   |breakage - SwitchToGreeter  |breakage - SwitchToGreeter
                   |/ SwitchToUser related      |/ SwitchToUser related
          Component|Driver/nouveau              |Server/Ext/GLX
           Assignee|nouveau at lists.freedesktop.o |xorg-team at lists.x.org
                   |rg                          |

--- Comment #10 from poma <pomidorabelisima at gmail.com> ---
However, this is not particular to nouveau.ko.
Also tested with AMD radeon.ko and Intel i915.ko - the result is the same.

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|GLX                         |Drivers/DRI/nouveau
         QA Contact|mesa-dev at lists.freedesktop. |nouveau at
lists.freedesktop.o
                   |org                         |rg
           Assignee|mesa-dev at lists.freedesktop. |nouveau at
lists.freedesktop.o
                   |org                         |rg

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Drivers/DRI/nouveau         |GLX
         QA Contact|nouveau at lists.freedesktop.o |mesa-dev at
lists.freedesktop.
                   |rg                          |org
           Assignee|nouveau at lists.freedesktop.o |mesa-dev at
lists.freedesktop.
                   |rg                          |org

--- Comment #16 from poma <pomidorabelisima at gmail.com> ---
mesa-12.0.3

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|12.0                        |unspecified
           Assignee|mesa-dev at lists.freedesktop. |nouveau at
lists.freedesktop.o
                   |org                         |rg
            Product|Mesa                        |xorg
          Component|GLX                         |Driver/nouveau
         QA Contact|mesa-dev at lists.freedesktop. |xorg-team at lists.x.org
                   |org                         |

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[GLX] Xsession Log In       |G98: DRM: GPU lockup ...
                   |breakage - Switch User /    |
                   |Switch To Greeter / VT      |
                   |Switch related              |

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--- Comment #17 from poma <pomidorabelisima at gmail.com> ---
DRM: GPU lockup ...

= HW:
G98

= SW:
Linux 4.8.2
libdrm 2.4.71
X.Org X Server 1.18.4
lightdm 1.20.0
lightdm-gtk-greeter 2.0.2
xfce4-session 4.12.1-20160822git7c13689
xfwm4 4.12.3-20160823git2b08627

This is so far the worst outcome using nouveau,
after this system is practically unusable as Desktop,
hardware reset is required after the first Log Out.

= dmesg:
nouveau 0000:02:00.0: disp: ERROR 5 [INVALID_STATE] 0b [] chid 1 mthd 0080 data
00000000
nouveau 0000:02:00.0: disp: Base 1:
nouveau 0000:02:00.0: disp:     0084: 00000000              
nouveau 0000:02:00.0: disp:     0088: 00000000              
nouveau 0000:02:00.0: disp:     008c: 00000000              
nouveau 0000:02:00.0: disp:     0090: 00000000              
nouveau 0000:02:00.0: disp:     0094: 00000000 -> f0000000
nouveau 0000:02:00.0: disp:     00a0: 00000000              
nouveau 0000:02:00.0: disp:     00a4: 00000000              
nouveau 0000:02:00.0: disp:     00c0: 00000000 -> ffff0000
nouveau 0000:02:00.0: disp:     00c4: 00000000              
nouveau 0000:02:00.0: disp:     00c8: 00000000              
nouveau 0000:02:00.0: disp:     00cc: 00000000              
nouveau 0000:02:00.0: disp:     00e0: 40000000              
nouveau 0000:02:00.0: disp:     00e4: 00000000              
nouveau 0000:02:00.0: disp:     00e8: 00000000              
nouveau 0000:02:00.0: disp:     00ec: 00000000              
nouveau 0000:02:00.0: disp:     00fc: 00000000              
nouveau 0000:02:00.0: disp:     0100: fffe0000              
nouveau 0000:02:00.0: disp:     0104: 00000000              
nouveau 0000:02:00.0: disp:     0110: 00000000              
nouveau 0000:02:00.0: disp:     0114: 00000000              
nouveau 0000:02:00.0: disp: Base 1 - Image 0:
nouveau 0000:02:00.0: disp:     0800: 0002e200 -> 00000500
nouveau 0000:02:00.0: disp:     0804: 00000000              
nouveau 0000:02:00.0: disp:     0808: 04380780 -> 03000400
nouveau 0000:02:00.0: disp:     080c: 00007804 -> 00100800
nouveau 0000:02:00.0: disp:     0810: 0000cf00 -> 0000e800
nouveau 0000:02:00.0: disp: Base 1 - Image 1:
nouveau 0000:02:00.0: disp:     0c00: 0002e200 -> 00000500
nouveau 0000:02:00.0: disp:     0c04: 00000000              
nouveau 0000:02:00.0: disp:     0c08: 04380780 -> 03000400
nouveau 0000:02:00.0: disp:     0c0c: 00007804 -> 00100800
nouveau 0000:02:00.0: disp:     0c10: 0000cf00 -> 0000e800
nouveau: evo channel stalled
nouveau 0000:02:00.0: DRM: GPU lockup - switching to software fbcon


= Xorg.log:
(EE) [mi] EQ overflowing.  Additional events will be discarded until existing
events are processed.
(EE) 
(EE) Backtrace:
(EE) 0: /usr/libexec/Xorg (mieqEnqueue+0x253) [0x57cd33]
(EE) 1: /usr/libexec/Xorg (QueueKeyboardEvents+0x52) [0x44f2c2]
(EE) 2: /usr/libexec/Xorg (xf86PostKeyboardEvent+0x3b) [0x488a8b]
(EE) 3: /usr/lib64/xorg/modules/input/evdev_drv.so (_init+0x2fb0)
[0x7fe3135e4a20]
(EE) 4: /usr/lib64/xorg/modules/input/evdev_drv.so (_init+0x3695)
[0x7fe3135e5d15]
(EE) 5: /usr/libexec/Xorg (DPMSSupported+0xe8) [0x478d98]
(EE) 6: /usr/libexec/Xorg (xf86SerialModemClearBits+0x2b2) [0x49e0b2]
(EE) 7: /lib64/libc.so.6 (__restore_rt+0x0) [0x7fe31ed2276f]
(EE) 8: /lib64/libc.so.6 (ioctl+0x5) [0x7fe31ede6b65]
(EE) 9: /lib64/libdrm.so.2 (drmIoctl+0x28) [0x7fe3200cf2b8]
(EE) 10: /lib64/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fe3200d1e2b]
(EE) 11: /lib64/libdrm_nouveau.so.2 (nouveau_bo_wait+0xc2) [0x7fe3198b31f2]
(EE) 12: /usr/lib64/xorg/modules/drivers/nouveau_drv.so (_init+0x20faa)
[0x7fe319aff17a]
(EE) 13: /usr/libexec/Xorg (xf86DetachAllCrtc+0xb3b) [0x4b21fb]
(EE) 14: /usr/libexec/Xorg (xf86DestroyCursorInfoRec+0xb6a) [0x4bc99a]
(EE) 15: /usr/libexec/Xorg (RamDacHandleColormaps+0x83a) [0x4bb1ea]
(EE) 16: /usr/libexec/Xorg (miPointerUpdateSprite+0x26b) [0x5862db]
(EE) 17: /usr/libexec/Xorg (miPointerUpdateSprite+0x4ba) [0x58697a]
(EE) 18: /usr/libexec/Xorg
(CompositeRegisterImplicitRedirectionException+0x42b9) [0x4cd289]
(EE) 19: /usr/libexec/Xorg (AddTraps+0x7810) [0x5205c0]
(EE) 20: /usr/libexec/Xorg (ConfineToShape+0x9a8) [0x440578]
(EE) 21: /usr/libexec/Xorg (WindowHasNewCursor+0x37) [0x441067]
(EE) 22: /usr/libexec/Xorg
(CompositeRegisterImplicitRedirectionException+0x3f20) [0x4ccc60]
(EE) 23: /usr/libexec/Xorg
(CompositeRegisterImplicitRedirectionException+0x4eda) [0x4cebda]
(EE) 24: /usr/libexec/Xorg (SendErrorToClient+0x2df) [0x436e2f]
(EE) 25: /usr/libexec/Xorg (remove_fs_handlers+0x463) [0x43ae63]
(EE) 26: /lib64/libc.so.6 (__libc_start_main+0xf1) [0x7fe31ed0e731]
(EE) 27: /usr/libexec/Xorg (_start+0x29) [0x424d59]
(EE) 28: ? (?+0x29) [0x29]
(EE) 
(EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up
the stack.
(EE) [mi] mieq is *NOT* the cause.  It is a victim.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #125354|0                           |1
        is obsolete|                            |

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #125355|0                           |1
        is obsolete|                            |

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #125910|0                           |1
        is obsolete|                            |

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poma <pomidorabelisima at gmail.com> changed:

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

--- Comment #18 from poma <pomidorabelisima at gmail.com> ---
Since there is no response from developers.

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