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SubjectRe: Linux 2.6.27-git3: no SD card reader
Pierre Ossman wrote:
> On Tue, 14 Oct 2008 23:27:59 +0200
> "J.A. Magallón" <> wrote:
>>> Have you tested more than one card?
>> I have two (both unknown brands for me, but I write full names fwiw):
>> - One "MBA Executive HiSpeed SD", 2Gb
>> - One "takeMS SDHC card Class6", 8Gb
>> Both give about 10Mb/s on read with hdparm under 2.6.27.
> And both work fine in one of the slots, but not the other?
>>> What machine is this?
>> It's an Acer Aspire One. From what I have seen, there are two SD devices.
>> Both are capable to read SDHC cards, I have switched cards and they work
>> (or at the moment both are working as backwards-compatible in plain SD
>> mode, if that even exists...).
> The SD/SDHC distinction is all software, so the hardware doesn't really
> care.
>> I call this half-working because I have to boot with a card inside a slot
>> to have it detected. If i boot without the card-in, it even dissapears from
>> lspci. This is just with the left SD inserted:
> No idea why this occurs. I'd guess some ACPI voodoo. You're going to
> have to check with the PCI and/or ACPI guys to figure that part of the
> mystery out.

This specific problem is what I thought Matthew's acpiphp patch would
solve - see my comment

If I've got this right, then this *specific* issue isnot a regression.

Matthew, if I have confused two similar issues, could you please help by
explaining the differences?

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