Messages in this thread | | | Date | Wed, 26 Feb 2003 00:21:17 -0500 | From | jpiszcz <> | Subject | Question about DMA and cd burning. |
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I was talking to a couple of friends who also run 2.4.x, they said they burn CD's all the time using DMA, and not PIO.
So I looked into the matter, apparently, the kernel sets my hd{b,c} (both Plextor 12/10/32A's) drives DMA to disabled.
[war@war war]$ dmesg | grep -i dma Activating ISA DMA hang workarounds. VP_IDE: VIA vt82c596b (rev 12) IDE UDMA66 controller on pci00:07.1 ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:pio hda: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=9729/255/63, UDMA(66) hdb: DMA disabled hdc: DMA disabled [war@war war]$
[war@war war]$ lspci 00:00.0 Host bridge: VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x] (rev 44) 00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP] 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C596 ISA [Mobile South] (rev 12) 00:07.1 IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC Bus Master IDE (rev 06) 00:07.2 USB Controller: VIA Technologies, Inc. USB (rev 08) 00:07.3 Host bridge: VIA Technologies, Inc. VT82C596 Power Management (rev 20) 00:10.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 07) 00:10.1 Input device controller: Creative Labs SB Live! MIDI/Game Port (rev 07) 00:11.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 30) 00:12.0 SCSI storage controller: Adaptec AHA-7850 (rev 03) 01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo 3 (rev 01) [war@war war]$
I even went further and tried:
append="ide-cd=ignore=hdb ide-cd=ignore=hdc"
In my lilo.conf, once again, no luck.
Can anyone offer any suggestions why others can burn CD's in DMA mode, yet the kernel keeps disabling DMA for my burners?
Please cc me as I am not subscribed to the list, thank you.
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