[xubuntu-users] suspend corrupts something

Timothy Redmond tredmond59 at yahoo.com
Sat Jan 4 03:06:59 UTC 2014

I apologize if this is a repost.  My impression is that this didn't get 
through the first time.

I am having a problem with suspend and resume.  I suspect that this is a 
nouveau issue but I don't know this for sure.

I have a Thinkpad W520 and it has both an NVidia card (lshw reports 
GF108GLM [Quadro 1000M]) and an Intel integrated graphics controller.  I 
can switch modes in the bios and I do this on occasion because they have 
different advantages.  I am running Xubuntu 13.10 and I use the nouveau 
drivers with the NVidia card.

My problem only happens when I set the graphics card to use NVidia and 
this is why I suspect that this might be a nouveau problem. If I suspend 
the machine and resume it then at first glance, everything seems ok.  My 
X session generally looks fine and most applications still work.  
However after the suspend and resume, three of my applications 
(quakespasm, mathematica and virtualbox) no longer work.  Two of them 
(mathematica and virtualbox) cause X system to freeze and I am not even 
able to go to a different console window with C-Alt-F1.  After some time 
X will shutdown and restart.  After X restarts, I am fine again as long 
as I don't use the three programs.

The problem with quake is a bit different.  X is still frozen but I can 
go to a different console with C-Alt-F1 and kill quake from there.  
After killing quake X is unstuck and I can continue doing things.

In the period while X is frozen and crashing there are some messages 
that show up in the syslog which say:

       nouveau E[Xorg[1680]] failed to idle channel 0xcccc0001 [Xorg[1680]]

I can replicate this problem fairly consistently with mathematica and I 
have also replicated this on a fresh xubuntu install.

I don't know enough about Linux to know what additional information to 
post.   I put some logs on the web page here:


The last messages in the Xorg.0.log look like this:

    [  1053.741] nouveau_exa_upload_to_screen:384 - falling back to memcpy ignores tiling
    [  1068.740] nouveau_exa_download_from_screen:299 - falling back to memcpy ignores tiling
    [  1068.740] (EE)
    [  1068.740] (EE) Backtrace:
    [  1068.740] (EE) 0: /usr/bin/X (xorg_backtrace+0x3d) [0x7ffe727fb02d]
    [  1068.740] (EE) 1: /usr/bin/X (0x7ffe72659000+0x1a5d99) [0x7ffe727fed99]
    [  1068.741] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7ffe71759000+0xfbb0) [0x7ffe71768bb0]
    [  1068.741] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7ffe70373000+0x14f559) [0x7ffe704c2559]
    [  1068.741] (EE) 4: /usr/lib/xorg/modules/libexa.so (0x7ffe6b696000+0x53d6) [0x7ffe6b69b3d6]
    [  1068.741] (EE) 5: /usr/lib/xorg/modules/libexa.so (0x7ffe6b696000+0x5893) [0x7ffe6b69b893]
    [  1068.741] (EE) 6: /usr/lib/xorg/modules/libexa.so (0x7ffe6b696000+0x7f12) [0x7ffe6b69df12]
    [  1068.741] (EE) 7: /usr/lib/xorg/modules/libexa.so (0x7ffe6b696000+0x10222) [0x7ffe6b6a6222]
    [  1068.741] (EE) 8: /usr/lib/xorg/modules/libexa.so (0x7ffe6b696000+0x8599) [0x7ffe6b69e599]
    [  1068.741] (EE) 9: /usr/bin/X (0x7ffe72659000+0x51f59) [0x7ffe726aaf59]
    [  1068.741] (EE) 10: /usr/bin/X (0x7ffe72659000+0x5500e) [0x7ffe726ae00e]
    [  1068.741] (EE) 11: /usr/bin/X (0x7ffe72659000+0x4456a) [0x7ffe7269d56a]
    [  1068.741] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7ffe70394de5]
    [  1068.742] (EE) 13: /usr/bin/X (0x7ffe72659000+0x448af) [0x7ffe7269d8af]
    [  1068.742] (EE)
    [  1068.742] (EE) Segmentation fault at address 0x1a8
    [  1068.742] (EE)
    Fatal server error:
    [  1068.742] (EE) Caught signal 11 (Segmentation fault). Server aborting
    [  1068.742] (EE)
    [  1068.742] (EE)
    Please consult the The X.Org Foundation support
      for help.
    [  1068.742] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
    [  1068.742] (EE)
    [  1068.742] (II) AIGLX: Suspending AIGLX clients for VT switch
    [  1068.742] (II) NOUVEAU(0): NVLeaveVT is called.
    [  1068.782] (EE) Server terminated with error (1). Closing log file.

Is there any advice you can give on this?  Is this a known problem?

Thanks much,


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