Date: Sat, 18 Apr 1998 21:27:49 -0400 From: Randall Hopper <rhh@ct.picker.com> To: Alex Nash <nash@mcs.net> Cc: freebsd-multimedia@FreeBSD.ORG Subject: Re: Bt848: no IRQ Message-ID: <19980418212749.A5653@ct.picker.com> In-Reply-To: <199804190103.UAA00566@nash.pr.mcs.net>; from Alex Nash on Sat, Apr 18, 1998 at 08:03:08PM -0500 References: <19980418201915.A4856@ct.picker.com> <199804190103.UAA00566@nash.pr.mcs.net>
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Alex Nash: |I tried sources from January 1, 1998 and October 7th, 1997 -- both |acted the same as the latest -current sources: no video, no irq 12 |visible in vmstat -i. | |Nothing else is using IRQ 12, and the BIOS is configured to assign IRQ |12 to a PCI device. But let's suppose there was a hardware conflict |(i.e. something else is using 12, but I don't have my kernel configured |to use such a device). Wouldn't the fact that the device is identified |as being on irq 12 mean that vmstat -i would report the presence of irq |12? Not necessarily. If no interrupts have been issued by that device yet, I believe it won't be in the list. For example, I have an ISA ethernet board on IRQ 12 in my box and a modem on sio0/irq4. No net connected right now and irq12/lnc0 is absent from my vmstat -i. irq4/sio0 is also absent until I do something with my modem through sio0. |You've given me another idea though -- I'll juggle the PCI interrupts |so that the BIOS assigns a different IRQ to the BT848. Maybe it'll |start working if it uses another IRQ line. Worth a shot. |I have forgotten to mention one other possibly critical aspect of my |kernel: SMP. I'll give a UP kernel a try to see if that makes a |difference. If that's the ticket, Steve Passe <smp@csn.net> would be a good guy to poll. He's got a Bt848 card and runs SMP I believe. Randall To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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