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Re: Problems (panics) with using my uvideo... Help please..
On Mon, Oct 20, 2008 at 02:17:45PM +0100, Jeremy Morse wrote:
> USB_DEBUG should help - you should also enable UHCI_DEBUG. In the
> meantime I'll work out what that "overflow!" message indicates.
> You've mentioned this panic occurs when you're using mplayer - does it
> fault immediately when you start mplayer, some time in the middle or
> when mplayer stops?
Directly after 'starting playback'.
> Also attached is a workaround patch for ehci which stops NMIs from
> being raised on my system, it'd be great if you could test this too.
Heh, funny enough it talks about 768 frames (64 * 12) but the NMI still
gets raised. Ok... what I did: I patched my sys/dev/usb/ehci.c; I rebuilt
and moved over a new kernel (GENERIC.UVD) which looks like this now:
(some device diff cut out, no context)
-#ident "GENERIC-$Revision: 1.914 $"
+#ident "GENERIC-$Revision: 1.910 $"
-#options DIAGNOSTIC # expensive kernel consistency checks
-#options DEBUG # expensive debugging checks/support
+options DIAGNOSTIC # expensive kernel consistency checks
+options DEBUG # expensive debugging checks/support
-#makeoptions DEBUG="-g" # compile full symbol table
+makeoptions DEBUG="-g" # compile full symbol table
I tried these four things:
- boot generic.uvd -> crash (-8)
- boot generic.uvd -c -> 1st attempt works (?), then crash (-9)
- boot generic.uvd -1 -> crash (-A)
- boot generic.uvd -1c -> 1st attempt works (?), then crash (-B)
I was surprised to see situation improved on the uhci side, well, somewhat,
by the ehci patch? I also cvs updated before building, who knows.. and ehci
claims to hand over the video to uhci this way or another??
supplied stuff this time:
The 'attempt' photos are me being baffled by the 1st attempt working so I
had to shoot a pic as proof :) Although the output might indicate it didn't
work at all. These two attempts (9 and B) also have different dmesg parts,
* phew *
Enough crashin for today I believe.
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