Driver for "Multimedia eXtension Board" (MXB) missing

[Michael Hunold]

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=7.10
DISTRIB_CODENAME=gutsy
DISTRIB_DESCRIPTION="Ubuntu 7.10"

linux-ubuntu-modules-2.6.22-14-generic:
  Installiert:2.6.22-14.37
  Mögliche Pakete:2.6.22-14.37
  Versions-Tabelle:
 *** 2.6.22-14.37 0

Today I updated to Ubuntu 7.10. Unfortunately, the driver for the "Multimedia eXtension Board" (MXB) is missing.

"cat /boot/config-2.6.22-14-generic | grep "MXB"" says:
# CONFIG_VIDEO_MXB is not set

The MXB is a driver for an older analoge TV card based on the saa7146 chipset. Other saa7146 based drivers are compiled as a module, for example
CONFIG_VIDEO_HEXIUM_GEMINI=m
CONFIG_VIDEO_HEXIUM_ORION=m

Is there any explanation why the MXB is not included?

[Michael Hunold (hunold)]

I found an interesting comment by Ben Collins here:
https://launchpad.net/ubuntu/+source/linux-source-2.6.22/2.6.22-4.10

build/config: Disable mxb and dpc7146 driver in favour of hexium_orion
build/abi: Add mxb and usbtest to list of removed modules.

I'm sorry, but hexium_orion is a driver for a totally different card, so the mxb driver
must be re-enabled.

The dpc7146 driver may be kept disabled, because it's for the reference design card
that probably nobody has anymore.

Ben, would you please be so kind and contact me on this topic?

(Btw: I'm the author of the saa7146 driver and all of the card specific drivers)

[Michael Hunold (hunold)]

I tested if there is any real problem with the driver:

1. I installed the "linux-source" package
2. I copied config-2.6.22-14-generic and enabled the MXB again
3. I compiled mxb.ko, installed it to /lib/modules/2.6.22-14-generic/kernel/drivers/media/video/mxb.ko, ran depmod -a
4. I rebooted the machine

mxb.ko was automatically loaded and the card was fully functional, just like with Ubuntu 7.04.

My suggestion is to set
CONFIG_VIDEO_MXB=m
again in the .config to make the card supported again.

[Michael Hunold (hunold)]

Talked to benc on IRC in #linux-kernel
<BenC> MiHu: Ok, sounds reasonable, I'll look into getting it reverted
<BenC> MiHu: great, thanks for testing...just include the correct config option for us to change

[Ben (benc)]

I think this was assigned to me by mistake. ;-) I suspect you want to add https://bugs.launchpad.net/~ben-collins instead. :-)

[Michael Hunold (hunold)]

Ben, can you please tell me if you had the time to do this change yet?

The importance is still "undecided", so I'm wondering if you had time to fix this problem yet.

[Leann Ogasawara (leannogasawara)]

Hi Guys,

I'm just going to mark this as a duplicate of the newer bug 242587. Please continue to follow this bug's progress there. Thanks.