Messages in this thread |  | | | Subject | Re: Linux 2.4.20-pre4-ac1 | | From | Markus Plail <> | | Date | Fri, 23 Aug 2002 18:56:04 +0200 |
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Hi Anssi!
* Anssi Saari writes: >On Fri, Aug 23, 2002 at 06:46:02AM -0400, Alan Cox wrote: >>IDE status >[...]
>This new IDE stuff has certainly worsened my longstanding CD writing problem. >Data writes go fine at 16x. Audio writes work fine at 16x in FreeBSD >and Windows 98 with the same system. DMA is on, unmask_irq is on, 32bit >transfers are on, but don't matter much.
If you burn data in DAO mode you will have the same behaviour. Have you tried to toggle CONFIG_IDEPCI_SHARE_IRQ? It helped me a lot. Also I have to disable umaskirq, otherwise I have the same problems. Unfortunately I can't use the latest ac series because of a mysterious problem with ide-scsi. One thing I still do not understand is: IS DMA (theoretically) possible for stuff like c2scans, DAO writing, audio grabbing? From what I read in the LKML archives and from what Andre wrote me, I'd say no, but on the other hand I can do a c2scan at 5MB/s with almost no processor usage. Can't really be PIO.
regards Markus
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