[gentoo-amd64] Re: ASUS M2A-VM and kernel 2.6.27

[Duncan <1i5t5.duncan@cox.net>]

Volker Armin Hemmann <volker.armin.hemmann@tu-clausthal.de> posted
200812160302.10287.volker.armin.hemmann@tu-clausthal.de, excerpted below,
on  Tue, 16 Dec 2008 03:02:10 +0100:

> On Dienstag 16 Dezember 2008, Volker Armin Hemmann wrote:
>> On Dienstag 16 Dezember 2008, Duncan wrote:
>> > David Relson <david@osagesoftware.com> posted
>> > 20081215074756.33119ced@fit-pc, excerpted below, on  Mon, 15 Dec 2008
>> >
>> > 07:47:56 -0500:
>> > > FWIW, I've had the board for a year or so.  I learned when I got it
>> > > that the USB support for the SB600 is bad (based on discussions
>> > > with the kernel USB mailing list).  I worked around that problem
>> > > with a PCI USB card.
>> >
>> > 2.6.28 I believe has the fix for that.  If not, .29 will.  There's
>> > definitely a patch ready, I know that, as I've been following a bug
>> > based on someone here having that issue.
>>
>> the fix is in 2.6.27.8, .9, 2.6.28-rc-something
> 
> em, the fix for sb700. Don't know about sb600.

Yes, the fix for the sb700 USB was the breakthru on the sb600 as well.  
Apparently someone who could code kernel got an sb700, so that's why it 
got the fix first.  Then someone on the sb600 noted the sb700 fix, and 
someone from AMD/ATI got involved, and next thing I saw, there was a 
patch for the sb600 as well.  From the discussion, I believe it's 
basically taking the sb700 patch and generalizing it a bit, then making 
it apply to all the sb600s and conditionally to the early sb700s (the 
later ones apparently have the bug fixed in hardware).

The sb700 patch is therefore a bit ahead of the more generalized patch 
that applies to both, and is in 2.6.27 stable now as well as 2.6.28-rc-
whatever.  I'm not sure if the more generalized patch has/will make it 
into .28 or not, but for sure it'll be in .29 (and probably in .28 stable 
series), if it doesn't make it into .28.

That's from memory.  Since I'm posting a followup, let me go try to find 
the bug to link, and refresh my memory...

... It looks like my memory was correct.  As of the last comment on the 
bug, the sb600 patch hadn't been applied to mainline yet, tho it had been 
accepted by Greg KH.

There's a report that with the patch applied, a direct no-hub transfer 
now pauses, resets the USB root hub, and then resumes.  That's slightly 
worse on a direct connect, but much better with a hub since it actually 
works with a hub now where it wouldn't before.  So it'll probably go in, 
but they might be testing and tweaking a bit more to see if they can fix 
that last hitch before going mainline with it.

Meanwhile, there are several people confirming it does indeed fix the 
problem with a hub on the sb600.

Here's the bug link.  You may wish to CC yourself, to get updates.  As I 
said, you'll see I already am CCed.

http://bugzilla.kernel.org/show_bug.cgi?id=11599

-- 
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"Every nonfree program has a lord, a master --
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