** Description changed: I've had some trouble with DVD playback on Intrepid; I had the same problems with custom-compiled 2.6.25, 2.6.26 and 2.6.27 kernels on Hardy as well, so something apparently changed in 2.6.25 that affected my DVD drive. I've narrowed it down somewhat - apparently the pata_amd module is setting my DVD drive to PIO0 mode, which makes my DVD playback jerky and slows down my entire system when doing anything DVD-related. Partial output from "dmesg | grep ata" is how I discovered this: [ 3.477302] libata version 3.00 loaded. [ 4.000348] pata_amd 0000:00:0d.0: version 0.3.10 [ 4.000410] pata_amd 0000:00:0d.0: setting latency timer to 64 [ 4.000567] scsi0 : pata_amd [ 4.000714] scsi1 : pata_amd [ 4.001674] ata1: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0x3080 irq 14 [ 4.001678] ata2: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0x3088 irq 15 [ 4.328473] ata2.00: ATAPI: MATSHITAUJ-840D, 1.02, max MWDMA2 [ 4.328490] ata2: nv_mode_filter: 0x39f&0x7001->0x1, BIOS=0x0 (0x0) ACPI=0x7001 (60:600:0x11) [ 4.345511] ata2.00: configured for PIO0 - I tried blacklisting pata_amd, but it didn't seem to work. How do I - disable it or prevent it from setting my drive to PIO mode, and why is - it doing this in the first place? + I tried blacklisting pata_amd, but it didn't seem to work. This is + apparently because there is no amd74xx module to replace it - which, + given my google research, would easily fix the problem. Since libata's + pata support in the kernel is very clearly listed as beta, why you would + set it as the default in a final release is beyond me. Other people have + reported similar bugs with other libata pata modules. + + Please release a future kernel with amd74xx enabled and pata_amd + disabled, or help me find some way of installing amd74xx module myself.
-- DVD playback jerky with pata_amd https://bugs.launchpad.net/bugs/307829 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
