On Thu, 19 Jun 2014, Adam Williamson wrote: > On Thu, 2014-06-19 at 06:46 -0400, Robert P. J. Day wrote: > > rebooted my rawhide laptop this morning, it totally hung ... powered > > down and up, same thing, so i manually backed off to the earlier > > kernel release, 3.16.0-0.rc0.git1.1.fc21.x86_64, worked fine, and am > > now currently "yum updating" which will bump up my kernel to > > kernel-3.16.0-0.rc0.git11.1.fc21.x86_64, and i'll try that one. > > > > so was there a known issue with, uh, > > 3.16.0-0.rc1.git1.1.fc21.x86_64? it's been a while since a kernel > > simply froze my machine in its tracks. > > they're very early builds, so it's certainly plausible. when you say > it "totally hung" - how far did it get? did the screen blank? any > error messages? ah, a possible diagnosis -- the newest rawhide kernels appear to hang if i have an external monitor connected on my HDMI port during boot. just did a "yum update" and booted with: $ uname -r 3.16.0-0.rc1.git2.1.fc21.x86_64 $ and as long as i disconnect HDMI first, my asus G74S laptop boots just fine, and i can plug in the monitor afterwards and all is well. if, however, i reboot with the monitor still connected, i can see the little fedora blob slowly filling in with white, followed by the appearance of the fedora "f" symbol, which stays up for a couple seconds, then ... hang. display goes black, no desktop, no virtual consoles. i can do more testing but, at this point, it seems that the newest rawhide kernels don't play well with a connected HDMI monitor during boot. this is relatively new -- i've verified that the earlier 3.16.0-0.rc0.git1.1.fc21.x86_64 kernel works just fine booting connected to HDMI. one more thing ... once i boot with this new kernel, *then* plug in the monitor, everything seems to work fine, but when i went to test another reboot, the shutdown spewed kernel panic and call trace messages all over the screen. i have no idea if this is related, but i'm willing to do more testing if you have anything specific in mind. rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ======================================================================== -- test mailing list test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/test