Posts Tagged ‘Ubuntu’

Ricoh Drivers for Ubuntu 10.10

October 12, 2010 Leave a comment

If you try to compile r5u870 driver for Ricoh webcams under Ubuntu 10.10 you’ll fail due to a recent renaming of some functions in the linux kernel.

In particular:

usb_buffer_alloc() is renamed to usb_alloc_coherent()
usb_buffer_free()  is renamed to usb_free_coherent()

For more information:

To avoid this problem, make this substitution in the usbcam_util.c file that can be found here: ttp://

Categories: GNU/Linux Tags: , , ,

Thinkpad IBM audio buttons

October 6, 2010 Leave a comment

Do you have an ibm thinkpad?
Do you have gnome?
Do you have ubuntu?
You can not associate the hardware audio buttons with the volume indicator?
The most likely solution is to add ONE of the following lines to the “/etc/rc.local” file:

cp /sys/devices/platform/thinkpad_acpi/hotkey_all_mask /sys/devices/platform/thinkpad_acpi/hotkey_mask


echo 0x00ffffff > /proc/acpi/ibm/hotkey

… and, maybe, the buttons will work… :)


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