[Bug 110636] Re: hdparm - cannot set dma on IDE hard drive that works via pata

[Ben Collins]

Lot of misleading stuff in this report. I see several people showing
they cannot enable DMA. Some are shown on hda and some are on sda. So
this complicates the "needs PATA driver, not IDE driver". Also, some
reports show that udma is actually enabled.

Also, to explain the problem a bit better for feisty (my mistake for not
being verbose). Switching drivers sounds easy, but it's actually quite
complicated when you have to factor in regression testing. The reason
for using the current driver set is because they proved to be stable,
and in some cases (like for controllers mentioned here) the alternate
driver was actually very unstable, not allowing people to boot. So I
consider it very prudent to use a driver that may degrade CD-ROM support
for some people as opposed to using a driver that makes the system
unbootable for others.

So we will not be working to fix this in feisty. It's unfortunate, but
it's a decision we have to make, and it's been made. However, we
definitely want to get this fixed in gutsy. There's still three months
left of development, so plenty of time.

What I need is a concise description and set of logs for one person
(original submitter?) showing the problem under latest gutsy
2.6.22-8-generic kernel. Logs include dmesg, lspci -vvn and hdparm
outputs.

Thanks

** Changed in: linux-source-2.6.22 (Ubuntu)
     Assignee: Ubuntu Kernel Team => Ben Collins
       Status: Triaged => Incomplete

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hdparm - cannot set dma on IDE hard drive that works via pata
https://bugs.launchpad.net/bugs/110636
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