Date: Fri, 30 Jul 2004 17:06:01 -0700 From: Nate Lawson <nate@root.org> To: Kevin Oberman <oberman@es.net> Cc: sos@deepcore.dk Subject: Re: ATA DVD playback hanging in physrd Message-ID: <410AE269.4040404@root.org> In-Reply-To: <20040716231556.7D2225D08@ptavv.es.net> References: <20040716231556.7D2225D08@ptavv.es.net>
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Kevin Oberman wrote: >>From: Nate Lawson <nate@root.org> >>While playing back a DVD on my Thinkpad, it hangs at some point (2-5 >>minutes after beginning playback). The player is hung in "physrd" and >>the drive stops spinning. This hang happens when the drive is in PIO4 >>or DMA mode. >> >>However, starting another process (i.e. cat /dev/acd0) spins up the >>drive and it works (and the other process begins running again). >>What's interesting is that I can quickly trigger this hang by starting >>IO on a completely different channel (i.e. dd if=/dev/ad0 of=/dev/null >>bs=1m). This indicates that it may be a driver issue since the DVD >>drive that hangs is on a different channel and irq than the hard >>drive. >> >>Devices: >>atapci0: <Intel ICH3 UDMA100 controller> port >>0x1860-0x186f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0 >>ata0: at 0x1f0 irq 14 on atapci0 >>ata1: at 0x170 irq 15 on atapci0 >>[...] >>ad0: 19077MB <IC25N020ATMR04-0> [41344/15/63] at ata0-master UDMA100 >>ata1-master: FAILURE - ATAPI_RESET no interrupt >>acd0: DVDROM <MATSHITADVD-ROM SR-8175> at ata1-master PIO4 >> >>The same behavior also happens on my DVD/CDRW drive. >>ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt >>ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt >>ata1-master: FAILURE - ATAPI_RESET no interrupt >>acd0: CDRW <UJDA720 DVD/CDRW> at ata1-master PIO4 > > I have been seeing the same thing on my ThinkPad for a couple of > weeks. It may have been there for longer as I had not heavily used the > DVD for a while. There have been similar reports from others, but this > is the most exact match to what I have been seeing. Mine is a Toshiba > DVD/CDRW (DW-28E) at ata1-master UDMA33. I just tested and this behavior is the same with today's -current. -Nate
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