Ubuntu How to 'wake up' wireless interface? HP EliteBook 8540p laptop.

After spending a day trying to get 'suspend' (to RAM) working on my HP EliteBook 8540p laptop, I finally got it working. I took it home and brought it up out of suspend. However the screen remained black so I left it a while, but when nothing came of that I felt obliged to power the laptop off (hold down power button for some seconds).

Now when the laptop rebooted, and every boot since, the Wireless interface seems to be disabled. It is not possible to use the Wireless network interface at all now.

According to nm-tool, it is "State: asleep", and according to "lshw -C network", it is "network DISABLED".

The device is recognised properly, and various data can be read from it, it just seems to have somehow got itself disabled at a fundamental level.

Does anyone have any idea how I can re-enable the WiFi on this laptop? I do not have Windows installed so I can't use that AFAIK. Is there some special /sys file I can read/write to enable it?

Any suggestions welcome! Anything... :)

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