Date: Wed, 16 Apr 1997 22:39:41 -0400 From: Randall Hopper <rhh@ct.picker.com> To: Amancio Hasty <hasty@rah.star-gate.com>, Steve Passe <smp@csn.net> Cc: multimedia@freebsd.org Subject: Re: Bt848 Missing frames fix Message-ID: <19970416223941.29306@ct.picker.com> In-Reply-To: <199704170141.SAA02555@rah.star-gate.com>; from Amancio Hasty on Wed, Apr 16, 1997 at 06:41:12PM -0700 References: <19970416203838.49588@ct.picker.com> <199704170141.SAA02555@rah.star-gate.com>
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Thanks for the debugging tips. I haven't nailed down a pattern yet other than the few times its occurred, I think I've been typing in a remote login (ssh actually, connected to a machine over a slip connection). No big fly-by text transfers going on so this piece wasn't heavy on the interrupts. fxtv at the time is up with continuous display on at its default NTSC size of 320x240. VMode is 555 weight 16bpp, so its DMAing to the frame buffer; no CPU color conversion load. S3Virge driver, XFree 3.2A. Yes, I am running IDE hard drives off an on-motherboard PCI IDE controller, so that can under some circumstances give higher interrupt latency, but when the problem occurs, I'm not doing anything to access the disks, so I doubt that's a factor. Also, my dial-up link is serial, but I'm not doing anything but typing so my 16550 UARTs probably aren't even kicking in much less generating but a few interrupts per second. I don't know what of this info, if anything, is relevent to producing the problem because I can kick of fxtv, kick of a "find /" in a local window, and the same in the remote login window, simultaneously--try to beat the death out of the system--and I see absolutely no problem. I'll keep an eye out for other clues. Randall
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