mmc0 unknown controller - you may experience problems

[al.adab]

just come across

https://bugs.launchpad.net/ubuntu/+bug/323159

where it is suggested to edit /etc/modprobe.d/blacklist.conf
and insert the following

blacklist sdhci-pci
blacklist sdhci
blacklist mmc_core

whatever this is about, the message is now gone, and the cursor doesn't blink as long as before. A message comes out right before the desktop appears, but I don't manage to pause it to read it (any suggestion how to do this on a Dell Vostro 1310 keyboard? I thought it's enough to hit "pause"...).

More on this message as soon as I've figured out how to read that message.

[bjordan1979]

I have the same issue running 10.04. I have all the current updates and the install was a clean install not upgrade.

Kernel version:

Linux version 2.6.32-22-generic (buildd@rothera) (gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #33-Ubuntu SMP Wed

On boot I see a blinking cursor for a while the error blips up on the screen then the boot splash screen starts. My kern.log has:

------------------------------------------
Jun 1 19:40:59 Workstation20 kernel: [ 14.158573] sdhci: Secure Digital Host Controller Interface driver
Jun 1 19:40:59 Workstation20 kernel: [ 14.158577] sdhci: Copyright(c) Pierre Ossman
Jun 1 19:40:59 Workstation20 kernel: [ 14.160559] sdhci-pci 0000:03:05.2: SDHCI controller found [1217:7120] (rev 1)
Jun 1 19:40:59 Workstation20 kernel: [ 14.160583] sdhci-pci 0000:03:05.2: PCI INT A -> Link[LNKB] -> GSI 19 (level, low) -> IRQ 19
Jun 1 19:40:59 Workstation20 kernel: [ 14.160617] mmc0: Unknown controller version (16). You may experience problems.
Jun 1 19:40:59 Workstation20 kernel: [ 14.160723] Registered led device: mmc0::
Jun 1 19:40:59 Workstation20 kernel: [ 14.160778] mmc0: SDHCI controller on PCI [0000:03:05.2] using PIO
------------------------------------------

My card reader still works correctly. I recently copied images from an SD card.

I'm on an Averatec 2300 series notebook.

I'd love to resolve the issue. More importantly find a way to speed up my boot times. It probably sits on the blinking cursor for about 15 seconds (maybe more). Which is really annoying on boot.

[johnathanamber]

I am also having this issue. I have this thread going:
http://ubuntuforums.org/showthread.p...58#post9590058

Problem with the blacklist thing is that I was to use my card reader. That would block it form being used.

God bless,
Johnathan

[Aeric]

Aug 1 14:59:47 Ubuntu kernel: [ 22.151942] acer-wmi: Brightness must be controlled by generic video driver
Aug 1 14:59:47 Ubuntu kernel: [ 22.156922] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000
Aug 1 14:59:47 Ubuntu kernel: [ 22.172921] sdhci: Secure Digital Host Controller Interface driver
Aug 1 14:59:47 Ubuntu kernel: [ 22.172924] sdhci: Copyright(c) Pierre Ossman
Aug 1 14:59:47 Ubuntu kernel: [ 22.174435] sdhci-pci 0000:0f:06.2: SDHCI controller found [1217:7120] (rev 2)
Aug 1 14:59:47 Ubuntu kernel: [ 22.174459] sdhci-pci 0000:0f:06.2: PCI INT A -> GSI 22 (level, low) -> IRQ 22
Aug 1 14:59:47 Ubuntu kernel: [ 22.174485] mmc0: Unknown controller version (2). You may experience problems.
Aug 1 14:59:47 Ubuntu kernel: [ 22.174571] Registered led device: mmc0::
Aug 1 14:59:47 Ubuntu kernel: [ 22.174611] mmc0: SDHCI controller on PCI [0000:0f:06.2] using DMA

I guess mmc0 is something related to multimedia controller?

[akoskm]

I guess mmc0 is something related to multimedia controller?

As mentioned above it is the card reader, (M)ulti (M)edia (C)ard.