Centrino Ultimate-N 6300 not responding

I have a ThinkPad T420, which comes with an Intel Corporation Centrino Ultimate-N 6300 wireless adapter. The card is recognised out of the box, and it connects to my home WiFi. There are two kernel modules loaded: iwlmvm and iwlwifi. Typically, after a minute or two the internet connection becomes so slow that it is virtually lost. I am running Slackware64 14.2 with kernel 4.4.217. It seems I finally found a solution in the Ubuntu forums.

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Sound over HDMI cable

My laptop has an Intel video card and an HDMI port, that I want to use for audio signal output, as well. Unfortunatelly, sound over HDMI does not work out-of-the-box, so I searched for a solution. There are good instructions at the Arch Linux Wiki. Read the rest of this entry »