SD card reader hangs bootup

[jpr0]

The SD card reader causes the boot process to hang in 7.10 (using the kernel 2.6.22-14-generic). I have an Asus x50n, which has a SATA drive, and an SD card reader. I can install 7.10, but simply can't boot. I had to install 7.04, and upgrade to 7.10, but continued using the kernel 2.6.20-16-generic. When I look at /var/log/dmesg when booting the 2.6.20-16-generic kernel, I see a few lines like this:

[ 10.304000] scsi 2:0:0:0: Direct-Access Generic- xD/SDMMC/MS/Pro 1.00 PQ: 0 ANSI: 0 CCS
[ 10.688000] SCSI device sdb: 990976 512-byte hdwr sectors (507 MB)
[ 10.692000] sdb: Write Protect is off
[ 10.692000] sdb: Mode Sense: 03 00 00 00
[ 10.692000] sdb: assuming drive cache: write through
[ 10.700000] SCSI device sdb: 990976 512-byte hdwr sectors (507 MB)
[ 10.700000] sdb: Write Protect is off
[ 10.700000] sdb: Mode Sense: 03 00 00 00
[ 10.700000] sdb: assuming drive cache: write through
[ 10.700000] sdb: sdb1
[ 10.704000] sd 2:0:0:0: Attached scsi removable disk sdb
[ 10.704000] sd 2:0:0:0: Attached scsi generic sg1 type 0

...and the boot process continues. However, when I'm booting from the 7.10 kernel, the boot process hangs at the last line, then I get bumped into a busy box, with this output

Check root = bootarg cat /proc/cmdline
or missing modules, devices: cat /proc/modules ls /dev
ALERT! /dev/disk/by-uuid/[long uuid] does not exist. Dropping to a shell!

The difference between what I see when I boot from the .22 kernel as opposed to the .20 kernel is that in the above dmesg (for the .20 kernel) the SD card reader becomes sdb and the SATA drive is sda, whereas booting from the .22 kernel the SD card reader becomes sda. I don't know if this makes a difference - I'll take a picture of the output of the boot process for the .22 kernel and attach it later.
By the way, this is similar to this thread

https://bugs.launchpad.net/ubuntu/+bug/147574

except the initial post reports the "quiet splash" problem.
Thanks for your time,
John

[jpr0 (robinson-jp)]

Here's the output from the 2.6.22-14 kernel.

[Leann Ogasawara (leannogasawara)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The Hardy Heron Alpha series was recently released. Alpha2 and subsequent releases contain an updated version of the kernel. You can download and try the new Hardy Heron Alpha release from http://cdimage.ubuntu.com/releases/hardy/ . You should be able to then test the new kernel via the LiveCD. If you can, please verify if this bug still exists or not and report back your results. General information regarding the release can also be found here: http://www.ubuntu.com/testing/ . Thanks!

[Leann Ogasawara (leannogasawara)]

Also just to add a note for future reference, it's helpful when reporting a bug to make sure it is assigned against a specific package. That way the specific development teams will be notified of the bug. Otherwise a bug may go unnoticed for quite some time. I've updated this report to be against package linux-source-2.6.22. For help determining which package to assign to, please refer to https://wiki.ubuntu.com/Bugs/FindRightPackage . Thanks!

[Leann Ogasawara (leannogasawara)]

This bug report is being closed because we received no response to the last inquiry for information. Please reopen it if this is still an issue in the current Ubuntu release. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Please don't hesitate to submit bug reports in the future, we really appreciate it. Thanks again!

[jpr0 (robinson-jp)]

I won't install hardy because even using the liveCD there are many crashes (which I reported).
I don't want to install this is there are problems even on the liveCD.