Tech Insider					     Technology and Trends


		   Video for Linux Mailing List Archives

List:       linux-video
Subject:    [video4linux] bttv crashes
From:       Gerd Knorr <kraxel () goldbach ! isdn ! cs ! tu-berlin ! de>
Date:       1998-06-28 19:48:56


  Hi * !

I have some trouble with bttv:  Sometimes it crashes the box at insmod
time (hard locked -- no ping, no console switching, just dead).  Sometimes
it works fine.  Once the driver is loaded, everything seems to work fine. 
Any hint or idea how to track down such a problem? 

If it loads successful, I get this to the syslog:

bttv0: Brooktree Bt848 (rev 17) bus: 0, devfn: 120, irq: 3, memory: 0xffbeb000.
bttv1: Brooktree Bt848 (rev 18) bus: 0, devfn: 88, irq: 9, memory: 0xffbea000.

My VGA card (matrox mystique) has IRQ 9 too (according to /proc/pci).
Maybe this is a problem?  Otherwise everything looks sane...

  Gerd

------------
To unsubscribe from this list send mail to majordomo@phunk.org with the
line "unsubscribe video4linux" without the quotes in the body of the
message.





List:       linux-video
Subject:    Re: [video4linux] bttv crashes
From:       Gerd Knorr <kraxel () goldbach ! isdn ! cs ! tu-berlin ! de>
Date:       1998-06-29 7:41:46

On Mon, 29 Jun 1998, Andras Kadinger wrote:

> Hi Gerd,
> 
> Gerd Knorr wrote:
> > If it loads successful, I get this to the syslog:
> > 
> > bttv0: Brooktree Bt848 (rev 17) bus: 0, devfn: 120, irq: 3, memory: 0xffbeb000.
> > bttv1: Brooktree Bt848 (rev 18) bus: 0, devfn: 88, irq: 9, memory: 0xffbea000.
> > 
> > My VGA card (matrox mystique) has IRQ 9 too (according to /proc/pci).
> > Maybe this is a problem?  Otherwise everything looks sane...
> 
> It might be a stupid question, but what chipset do You have? I have
> similar lockup problems with bttv with a 430FX based motherboard
> (although lockups occur while overlay); Ralph also has similar
> experiences with the same chipset.

lspci says:

00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)

With just one board everything works rock solid (and the bt848 gets irq 3 
then).  Therefore I suspect it is a problem with irq 9 (both bt848 and vga
get it).  And I have a stupid bios, I can't disable the irq for the vga
board in the setup :-(

  Gerd

------------
To unsubscribe from this list send mail to majordomo@phunk.org with the
line "unsubscribe video4linux" without the quotes in the body of the
message.

List:       linux-video
Subject:    Re: [video4linux] bttv crashes
From:       Ralph Metzler <rjkm () thp ! uni-koeln ! de>
Date:       1998-06-29 13:12:13

Gerd Knorr writes:
 > On Mon, 29 Jun 1998, Andras Kadinger wrote:
 > 
 > > Hi Gerd,
 > > 
 > > Gerd Knorr wrote:
 > > > If it loads successful, I get this to the syslog:
 > > > 
 > > > bttv0: Brooktree Bt848 (rev 17) bus: 0, devfn: 120, irq: 3, memory: 0xffbeb000.
 > > > bttv1: Brooktree Bt848 (rev 18) bus: 0, devfn: 88, irq: 9, memory: 0xffbea000.
 > > > 
 > > > My VGA card (matrox mystique) has IRQ 9 too (according to /proc/pci).
 > > > Maybe this is a problem?  Otherwise everything looks sane...
 > > 
 > > It might be a stupid question, but what chipset do You have? I have
 > > similar lockup problems with bttv with a 430FX based motherboard
 > > (although lockups occur while overlay); Ralph also has similar
 > > experiences with the same chipset.
 > 
 > lspci says:
 > 
 > 00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
 > 
 > With just one board everything works rock solid (and the bt848 gets irq 3 
 > then).  Therefore I suspect it is a problem with irq 9 (both bt848 and vga
 > get it).  And I have a stupid bios, I can't disable the irq for the vga
 > board in the setup :-(

I also have 2 cards in a PentiumPro board (440FX) right now (after several
months during which I did not test using more than one card any more. But
nobody complained about any problems :-)

I did quite some testing with it over the last weekend (regarding another
unrelated little project) and experienced only 1 lockup during "insmod
bttv.o" during the whole time although I did quite a lot of insmods.
Both cards are using the same interrupt 11, additionally shared with an NCR810
SCSI controller.
Once installed there are also no problems at all.
(Ok, the memory throughput of the RIVA128 I have in this PC now seems to be 
not quite as good as the Matrox Millennium's. There are pixel errors already
with 16bit with both cards displaying 922x576 PAL pictures.)

I'll have to check if this also happens if the NCR gets its own interrupt.
But as I said, I only had one lockup during the whole weekend and I was
fooling around with the sources which also could have caused this.
I am also running out of interrupts:
DEC21440(9), Bt848 (2x11), NCR810 (11), 3Com 3c509(5), PS/2(12), SB16(7),
Riva128(10, no sharing possible due to needed but missing interrupt handler).

Ralph


------------
To unsubscribe from this list send mail to majordomo@phunk.org with the
line "unsubscribe video4linux" without the quotes in the body of the
message.

			        About USENET

USENET (Users’ Network) was a bulletin board shared among many computer
systems around the world. USENET was a logical network, sitting on top
of several physical networks, among them UUCP, BLICN, BERKNET, X.25, and
the ARPANET. Sites on USENET included many universities, private companies
and research organizations. See USENET Archives.

		       SCO Files Lawsuit Against IBM

March 7, 2003 - The SCO Group filed legal action against IBM in the State 
Court of Utah for trade secrets misappropriation, tortious interference, 
unfair competition and breach of contract. The complaint alleges that IBM 
made concentrated efforts to improperly destroy the economic value of 
UNIX, particularly UNIX on Intel, to benefit IBM's Linux services 
business. See SCO vs IBM.

The materials and information included in this website may only be used
for purposes such as criticism, review, private study, scholarship, or
research.

Electronic mail:			       WorldWideWeb:
   tech-insider@outlook.com			  http://tech-insider.org/