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Showing posts from February, 2012

Bluetooth Keyboard Doesn't Work After Suspend

I have a Logitech diNovo Edge Bluetooth keyboard. I like it a lot for use with our HTPC. However, I found that when the HTPC is suspended, the keyboard would not reconnect on resume. I found this solution on the Ubuntu Forums and it works for me. Edit /etc/default/acpi-support to remove and reload the Bluetooth module on suspend and resume: # This will save less power, but may work on more machines #ACPI_SLEEP_MODE=mem ACPI_SLEEP_MODE=standby # Add modules to this list to have them removed before suspend and reloaded # on resume. An example would be MODULES="em8300 yenta_socket" # # Note that network cards and USB controllers will automatically be unloaded # unless they're listed in MODULES_WHITELIST MODULES="i8042" # Add modules to this list to leave them in the kernel over suspend/resume MODULES_WHITELIST=""
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HDMI Audio on Ubuntu

I was surprised to find out that plugging a DVI to HDMI cable into my Lenovo X220 docking station allowed me to use the audio channel of the HDMI connection. However, setting it up required a bit of trial and error. Open your sound settings and click the "Hardware" tab. You can then choose a "Profile" from the drop down. There are lots of profiles to choose from and many of them mention HDMI. For me, somewhat inexplicably, "Digital Stereo (HDMI) nr 3 Output" is the correct one. To verify that the chosen profile is the correct one, click the "Test Speakers" button. I found that it can take a few seconds for the profile selection to take effect. So count to ten before testing.
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