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Bug 59276 - DS10, ES40, ES45 can't enable DMA on IDE CD
DS10, ES40, ES45 can't enable DMA on IDE CD
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
alpha Linux
medium Severity medium
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Assigned To: Beth Uptagrafft
Brian Brock
: 58719 (view as bug list)
Depends On:
  Show dependency treegraph
Reported: 2002-02-04 10:32 EST by Jeff Wiedemeier
Modified: 2007-04-18 12:39 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2002-02-08 15:53:18 EST
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Description Jeff Wiedemeier 2002-02-04 10:32:36 EST
Description of Problem:

Can't enable DMA on CD-ROM (IDE) on AlphaServer DS10, AlphaServer DS10L,
AlphaServer ES40, AlphaServer ES45.

Version-Release number of selected component (if applicable):

kernel 2.4.9-14a

How Reproducible:


Steps to Reproduce:
1. during boot, note ALi15x3: simplex device messages
2. after booting, try hdparm -d 1 /dev/hda (assuming CD is hda)
3. hdparm fails to set dma

Actual Results:

Can't turn on DMA

Expected Results:

DMA turned on

Additional Information:
This is caused by the lack of the ali15x3 driver in the kernel. The generic PCI
IDA dma driver does not deal with the ALi1543 on these systems correctly. The
correct driver is needed. 

To fix - enable "ALI M15x3 chipset support" under "IDE, ATI, and ATAPI Block
devices" in the kernel configuration.
Comment 1 Beth Uptagrafft 2002-02-08 15:53:09 EST
*** Bug 58719 has been marked as a duplicate of this bug. ***
Comment 2 Phil Copeland 2002-04-03 03:08:48 EST
Fixed for final (woking)

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