mmc0 unknown controller version (2)

[abgalphabet]

Hello

I am getting a boot message when system boots up from Ubuntu Grub menu. The message is :

0.3563471 mmc0 unknown controller version (2)

This problem occurs in a Dell Vostro 2510. Note the message above about unknown controller version 2 and any possibility of resolutions to fix it.

root@sapserv01:~# lspci | grep SD
08:05.2 SD Host controller: O2 Micro, Inc. Integrated MMC/SD Controller (rev 02)

root@sapserv01:~# lsb_release -rd
Description: Ubuntu lucid (development branch)
Release: 10.04

Pls advise

[abgalphabet (abgalphabet)]

I experience the exactly same problem on my Fujitsu S6420 notebook which running Lucid 10.04 amd64 beta2 with the same SD host controller: O2 Mirco.
Then I tried booting my notebook using the latest Ubuntu Lucid 10.04 RC AMD64 LiveCD also. The same problem happened which is seen in the log files: dmesg, messages and syslog

[abgalphabet (abgalphabet)]

attached /var/log/messages file

[abgalphabet (abgalphabet)]

attached /var/log/syslog file

[Philip Muškovac (yofel)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage. I have classified this bug as a bug in the kernel.

When reporting bugs in the future please use apport, either via the appropriate application's "Help -> Report a Problem" menu or using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Andrew Sam (mailandrewsam)]

I'm having this bug too.. mine is Acer Aspire 4710. i remember seeing this bug when 9.10 was developed as well. Something messes up when u guys work on a new splash theme

[Goalie Fight (goaliefight)]

Same problem here too on Lucid.

$ dmesg |grep mmc0
[ 11.849266] mmc0: Unknown controller version (2). You may experience problems.
[ 11.849585] Registered led device: mmc0::
[ 11.849624] mmc0: SDHCI controller on PCI [0000:04:00.0] using ADMA

 $ lspci|grep SD
04:00.0 SD Host controller: Ricoh Co Ltd Device e822 (rev 03

[SF Basilix (sf-basilix)]

I too am having the same error message upon bootup. I am running Ubuntu 10.04 64 bit on a Dell Latitude E6510 with an Intel Core i5 and Intel integrated video.

[china4u (china4u)]

Still same problem here with latest Ubuntu, including all the latest updates:

6
[ 15.938218] mmc0: Unknown controller version (2). You may experience problems.

On a Dell Vostro 1520

More people with the same problem http://ubuntuforums.org/showthread.php?p=9239374#post9239374

its really annoying.

[CyberCastle (cybercastle)]

Please, see a possible fix here: https://bugzilla.redhat.com/show_bug.cgi?id=596475, and discuss your results

P.D.: It is only for Ricoh E822 devices

[aa-hcl (aa-hcl)]

I have the same problem.

Laptop: Dell Latitute E5510
OS: ubuntu 10.04, current updated version (uname -a
Linux aa-i3 2.6.32-25-generic #45-Ubuntu SMP Sat Oct 16 19:52:42 UTC 2010 x86_64 GNU/Linux)

In addition that SD card reader does not work (does not recognise the card), I found that:

if I keep the card inserted the system can completely freeze and require hard reboot; going through logs suggested that mmc0: unknown interrupt,

messages:

================================================

aa@aa-i3:~$ lspci | grep SD
03:00.0 SD Host controller: Ricoh Co Ltd Device e822 (rev 03)
aa@aa-i3:~$

aa@aa-i3:~$ dmesg | grep e822
[ 13.044959] sdhci-pci 0000:03:00.0: SDHCI controller found [1180:e822] (rev 3)

aa@aa-i3:~$ dmesg | grep SD
...
[ 13.044959] sdhci-pci 0000:03:00.0: SDHCI controller found [1180:e822] (rev 3)
[ 13.045315] mmc0: SDHCI controller on PCI [0000:03:00.0] using ADMA

aa@aa-i3:~$ dmesg | grep mmc
[ 1.628615] sr0: scsi3-mmc drive: 24x/8x writer dvd-ram cd/rw xa/form2 cdda pop-up
[ 13.045095] mmc0: Unknown controller version (2). You may experience problems.
[ 13.045254] Registered led device: mmc0::
[ 13.045315] mmc0: SDHCI controller on PCI [0000:03:00.0] using ADMA
aa@aa-i3:~$ dmesg | grep 13.04
[ 13.042405] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 13.042411] i915 0000:00:02.0: setting latency timer to 64
[ 13.044959] sdhci-pci 0000:03:00.0: SDHCI controller found [1180:e822] (rev 3)
[ 13.044998] sdhci-pci 0000:03:00.0: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[ 13.045095] mmc0: Unknown controller version (2). You may experience problems.
[ 13.045180] sdhci-pci 0000:03:00.0: setting latency timer to 64
[ 13.045254] Registered led device: mmc0::
[ 13.045315] mmc0: SDHCI controller on PCI [0000:03:00.0] using ADMA
aa@aa-i3:~$

===========================================================

Unfortunately, I am not experienced at all and I do not understand how to try a possible fix suggested by CyberCastle at
https://bugzilla.redhat.com/show_bug.cgi?id=596475

Can you please help me - what do I need to do in order to try to fix the SD card reader problem?

Many thanks!

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.