I have PC based on Asus Z87-PRO Motherboard. I have installed both Windows 7 & Ubuntu 15.04.
When I have to reset Ubuntu (e.g. because of freezing) all of USB 3.0 ports stop working. Completely - I mean neither windows, nor Ubuntu, nor even UEFI see them. To get USB 3.0 working back, I have to re-upload onboard USB 3.0 controller firmware using windows application provided by Asus.
Any idea what is causing this problem?
@Fabby, I don't think cosmic rays had anything to do with @heemayl issue because I am having the exact same issue. I also have an Asus Z87 Pro Mobo and after I updated to Ubuntu 15.04 the top 4 USB ports stopped working. My first thought was to RMA the board, but I've been seeing reports of issues with kernel 3.19 and the ASMedia USB controller.
More digging is in order, I'll reply on this thread I am able to find anything else.
I met the same issue today (with Asus Z87-PRO Motherboard) in same conditions, I fixed it by :
re-upload onboard USB 3.0 controller firmware using windows application provided by Asus
Ubuntu doesn't kill your USB 3.0 Chipset. Maybe you had a voltage spike when reset or the proverbial cosmic ray, or more probably: a bug in the firmware caused the problem! ¯\_(ツ)_/¯
Anyway it is a problem that was not caused by Ubuntu.
