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after installing ralink WiFi adapter (Digitus DN-7042-1 Rev2 = 148f:7601) following this link: Ralink MT7601U (148f:7601) Wi-Fi adapter installation the system's (Kubuntu 14.04) kernel panics and switches to text console when a program accesses the Internet.

What to do, friends of Ubuntu?

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user313486
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1 Answers1

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Seems that the (external) driver is buggy and is causing your system to crash; you're not alone.(1)

To undo the thing you should remove the driver you compiled (it should be called mt7601Usta.ko, and live somewhere under /lib/modules/3.13.0-24-generic/kernel/drivers/net (adapt for your kernel version). After that, depmod -a and a reboot should let you as before (I mean, no wifi but no kernel panics).

(1) which is not surprising; the driver has a date of September 2013, and the linux kernel evolves really fast. This is a problem of out-of-tree drivers; they must be really developed and cared of day-by-day to be useful. Bug the manufacturer so that they add the driver to the official kernel tree...

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Rmano
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    Thanks a lot for responding. Removing driver worked. I bugged the manufacturer, but that (I guess) will not result in a quick fix. – user313486 Aug 08 '14 at 21:57
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    How exactly would they add the driver to the official kernel tree?

    And: the patch mentions the date march 2014 (https://onedrive.live.com/?cid=25dde84d12f6ed3b&id=25DDE84D12F6ED3B!8315&ithint=file,.patch&authkey=!AC8SnU5poWC55VU). Who was working on that patch? user289087?

     – user313486 Aug 08 '14 at 22:07