On 09/20/17 10:41, Gregory P. Ennis wrote: > > I upgraded from 7.3 to 7.4 over the weekend. Everything went well > except that I can't login because the screen is black with a cursor. > > If reboot boot the 7.3 kernel 3.10.0-514.26.2.el7.x86_64 kernel > everything works just fine, so my guess is that there's a kernel issue > with the hardware, specifically the Skylake processor. > > Has anyone else run into this problem and if so can how I resolve the > problem other than using the previous kernel? > > ASUSTeK COMPUTER INC. Z170M-PLUS > VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06) > Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz Skylake > > Any help with this would be greatly appreciated. > > Pete > > -------------------------------------------------------------------- > > Pete, > > I have had various assortment of problems with 7.4 to the point that I > quit upgrading the rest of our PC's with 7.4 until the problems are > identified and fixed. The only work around that I could come up with is > to use the last 7.3 os which at least made each unit usable. > > As you know, most of the time these upgrades have been seamless because > the Centos team has done a wonderful job. However, the upgrade to 7.4 > has some problems, and I decided to stop the upgrade of our remaining > units until 7.4 works as well as 7.3. > > Greg > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > Greg, I've done 5 upgrades so far without any issues. This is the first one that has a problem and after some experimenting it looks like the kernel is identifying both the analog and digital ports and making the digital display the primary. I use a KVM switch and needless to say it's a royal pain to have to switch back and forth to accommodate this one host. Like you I settled on using th3 previous perfectly working 7.3 kernel, not optimum but it does work. I've also decided to get a graphics card in lieu of the on-board graphics card in the hope that that will solve the issue with the 7.4 kernel. Agreed you do get used to these upgrades working seamlessly and it's a bummer when occasionally things don't work out exactly as planned. Pete -- Unencumbered by the thought process. -- Click and Clack the Tappet brothers -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.