Bug 190510 - ATI Xpress IDE controller not recognized
ATI Xpress IDE controller not recognized
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity medium
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Assigned To: John W. Linville
Brian Brock
Depends On:
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Reported: 2006-05-02 23:41 EDT by Joe Pruett
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version: U4
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2006-08-30 13:59:56 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Joe Pruett 2006-05-02 23:41:25 EDT
Description of problem:
the ATI Xpress chipsets aren't recognized by the ide kernel subsystem so dma
doesn't work and performance suffers horribly.

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

How reproducible:
install on a board that has the ATI chipsset.  for example, the Intel D101Ggc

Steps to Reproduce:
1. install os
2. boot
3. note that dma is not enabled and performance is quite poor.
Actual results:
no dma for ide disks.

Expected results:
dma for ide disks

Additional info:
there is a patch at:

that i have tested with both i386 and x86_64 kernels and both work well.  i have
been told that this patch is slated for update 4.

i am mainly submitting this bug so that other people can find the patch more
easily than i did.
Comment 2 John W. Linville 2006-08-14 11:10:02 EDT
U4 should be out now...is this problem resolved?
Comment 3 Joe Pruett 2006-08-30 11:10:05 EDT
yes, it does fix things.  sorry it took a while to be able to reboot the machine
that needed the change.

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