On Sat, 8 Dec 2018 20:23:13 +0000 Baron <baron@...> wrote: > Hi Guys, > > On Wednesday 05 December 2018 23:35:57 deloptes wrote: > > Kate Draven wrote: > > > I do have several computers in me wee lab. The sticks are all > > > fine, mount and umount on all other computers, including another > > > pclos 64 with the same kernels. At first I thought it was a > > > kernel bug, wrong. > > > > > > I can only guess I'm installing something that messes it up. > > > > > > I reinstalled the OS into the test computer and incrementally > > > installing packages until I find the culprit. > > > > mounting was udev job - no ? or at least to notify the system that > > there is something attached to it and what exactly it is. > > Probably nothing to do with this problem, but anyway: > > If I have a HDD connected via a USB adaptor, I've found that after an > initial plugging and use, then safely removing it, going back to it, > in the same session, it may or may not be recognised. Doing a hard > reboot seems to clear what ever causes this. Simply logging out and > logging back in doesn't seem to work. Stupid question: Are you plugging these into the same port every time, or ports connected to the same headers on the motherboard? Loose connectors / flaky hardware can cause all sorts of weird symptoms. I've never seen this one in particular, but my sample size is small. E. Liddell