Bug 10158

Summary: i855 hang with XV
Product: xorg Reporter: Matthew Hodgson <matthew>
Component: Driver/intelAssignee: Eric Anholt <eric>
Status: RESOLVED DUPLICATE QA Contact: Xorg Project Team <xorg-team>
Severity: major    
Priority: medium CC: dparsons, jm
Version: git   
Hardware: Other   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Bug Depends on: 10645    
Bug Blocks: 10102    
Attachments:
Description Flags
log showing XV lockup
none
xorg.conf used to generate the attached log
none
XVideo crash log on intel 2.0rc2, xserver 1.3rc2 none

Description Matthew Hodgson 2007-03-02 05:01:18 UTC 
Trying to use XV on the modesetting branch of the intel driver on an 855GME causes X to lockup.  Running mplayer -vo xv yields the following in the Xorg.0.log:

loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
loops (1) maxed out for buffer 1
(II) intel(0): [drm] removed 1 reserved context for kernel
(II) intel(0): [drm] unmapping 8192 bytes of SAREA 0xdfbb8000 at 0xb7b42000
Error in I830WaitLpRing(), now is 280912022, start is 280910021
pgetbl_ctl: 0x1ffe0001 pgetbl_err: 0x0
ipeir: 0 iphdr: 1810000
LP ring tail: 870 head: 2ec len: 1f001 start 0
eir: 0 esr: 0 emr: ffff
instdone: ffc0 instpm: 0
memmode: 108 instps: 0
hwstam: ffff ier: 0 imr: ffff iir: 0
space: 129652 wanted 131064

Fatal server error:
lockup


Backtrace:
0: X(xf86SigHandler+0x80) [0x80c0dd0]
1: [0xffffe420]
2: X(AbortDDX+0x87) [0x80a2777]
3: X(AbortServer+0x28) [0x81b8208]
4: X(FatalError+0x67) [0x81b8727]
5: /usr/local/src/xorg-modular/lib/xorg/modules//drivers/intel_drv.so(I830WaitLpRing+0x117) [0xb7b7e717]
6: /usr/local/src/xorg-modular/lib/xorg/modules//drivers/intel_drv.so(I830Sync+0xf9) [0xb7b7e949]
7: /usr/local/src/xorg-modular/lib/xorg/modules//drivers/intel_drv.so [0xb7b85d5c]
8: /usr/local/src/xorg-modular/lib/xorg/modules//drivers/intel_drv.so [0xb7b85e90]
9: /usr/local/src/xorg-modular/lib/xorg/modules//drivers/intel_drv.so [0xb7b86231]
10: /usr/local/src/xorg-modular/lib/xorg/modules//libshadow.so [0xb7b4546e]
11: X [0x815ab1e]
12: X [0x80c556f]
13: X [0x8134396]
14: X [0x8158365]
15: X(main+0x514) [0x806fe84]
16: /lib/tls/libc.so.6(__libc_start_main+0xc8) [0xb7d27ea8]
17: X(FontFileCompleteXLFD+0xad) [0x806f131]

FatalError re-entered, aborting
Caught signal 11.  Server aborting
Comment 1 Matthew Hodgson 2007-03-02 05:03:37 UTC 
Created attachment 8951 [details]
log showing XV lockup

See also bug #10157 and http://lists.freedesktop.org/archives/xorg/2007-March/022229.html
Comment 2 Matthew Hodgson 2007-03-02 05:04:19 UTC 
Created attachment 8952 [details]
xorg.conf used to generate the attached log
Comment 3 Matthew Hodgson 2007-03-05 16:13:29 UTC 
I should clarify that XV also failed to work in that no video actually made it as far as the display - instead only solid colour appeared.  (I think it was pink overlay, but it may have been 'blank' YUV green - I'll need to check again).
Comment 4 Eric Anholt 2007-03-06 16:28:04 UTC 
Fixed a bug today that could easily cause serious problems like this.  Please update your xserver to current master and try again.
Comment 5 Drew Parsons 2007-03-20 05:48:32 UTC 
I'm experiencing an XVideo crash with intel 2.0rc2 (1.9.92) on xserver 1.3rc2 (1.2.99.902), running on Intel 82852/855GM. It sounds similar to the one in this bug.  Running a video using the XVideo extension (selected for example in vlc), the window displays only blue, and then after a few seconds the system crashes hard.  When I change vlc to use "X11 video output" instead, then video plays okay.

Eric, the only commit I could see of yours in master near 6 March was 024bbc7cbb924daaf3e305ddfc8e74509acd1e15 "Bug #9931: Fix linear allocations with a non-1-byte granularity."  It doesn't seem to apply to the 1.3 branch.
Comment 6 Drew Parsons 2007-03-20 05:50:57 UTC 
Created attachment 9235 [details]
XVideo crash log on intel 2.0rc2, xserver 1.3rc2
Comment 7 JM Ibanez 2007-04-14 10:18:34 UTC 
Could bug #10645 be related? I'll be marking it as depending on, as from where I'm standing (and from what I understand of the driver), what's actually happening and why it's crashing is that the driver is using only *one* pipe (pipe A) for XV, while the overlay is really in pipe B.
Comment 8 JM Ibanez 2007-04-16 12:01:06 UTC 
Hi, to those on this bug: could you try the patches attached to #10645 and see if that fixes it for you?

(BTW: can I mark this as a duplicate of #10645?)
Comment 9 JM Ibanez 2007-04-16 12:24:50 UTC 

*** This bug has been marked as a duplicate of bug 10645 ***

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