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From: Karthikeyan M. <kma...@ho...> - 2001-01-29 17:14:16
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Hi, I've been consistently running into this problem while trying to capture DV: after a few frames (20 seconds or so), dvgrab hangs. I see a message in /var/log/message saying ohci1394_0: waking up dma cxt 2, processing is probably too slow. I tried increasing the iso buffer to 16MB, with no improvement. I tried compiling the drivers with 1394_VERBOSE_DEBUG on. The problem goes away, but I see a lot of frames dropped and buffer underrun messages from dvgrab. I tried compiling without VERBOSE_DEBUG, and changed the DBGMSG in insert_dma_buffer to always print a message. This time, the problem appears later (after 3 minutes or so). In the meanwhile, I still see occasional "waking up dma cxt 2" messages interspersed with normal dma insertion messages. The messages in /var/log/messages stop all of a sudden, and dvgrab hangs. Any idea what could be happening? BTW, I've been able to successfully burn a CD using a Que CD writer using the same 1394 setup and the sbp2_1394 drivers (thats raw mode, I guess, so if it's a driver problem I'm seeing, It's probably limited to iso mode) I'm using pcmcia-cs, kernel 2.4.0 the patched 1394 drivers for 2.4.0 on a Vaio F-250 with a pyro DV for notebooks adapter. Karthik _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. |