On Thu, 2015-08-06 at 15:32 -0400, David Clymer wrote: > Package: src:linux > Version: 3.16.7-ckt11-1 > Severity: important > > > I encountered a lock-up several times in short succession: > 1. lockup > 2. reboot > 3. lockup shortly after login > > The system became unresponsive via the GUI, and I couldn't switch to > a terminal. I could log in remotely, though the system had very high > load, and was very slow to respond. > > During the first lockup, I saw messages that referenced alsa, and a > particular audio driver (ALC66), so I disabled the onboard audio card, > and installed PCI card with a different chipset/driver, which I was > using when the 2nd lockup occured, FWIW. > > Dmesg showed indication of soft lockups on various cores and a hard > lockup. [...] The call traces suggest that the OHCI (USB 1.1 controller) driver got stuck in a loop. As the mouse and keyboard are attached to USB 1.1 ports, that would also explain why the GUI was unresponsive while it was still possible to log in over the network. No ideas beyond that at present. Ben. -- Ben Hutchings Computers are not intelligent. They only think they are.
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