On Thu, Jul 7, 2016 at 10:31 AM, Frank Cox <theatre at melvilletheatre.com> wrote:> On Thu, 7 Jul 2016 10:16:23 +1000 > Venkata Balaji N wrote: > > > i left the system locked overnight. > > What are you using to lock the screen? Some of the screensavers can be > bad news on certain video cards (as I've learned the hard way) and can > cause just exactly that to happen. In that case, the screensaver has > locked up your video card. > > If this is the case, try a different screensaver. I suggest "black screen > only" for testing purposes. >I did the following and rebooted, all worked fine. I am not sure if that is the solution. [root at buildhost ~]# systemctl set-default graphical.target Regards, VB
Hi Venkata, Can you please let me know the steps which you have followed for re-installing the GNOME? I am having a similar problem on one of our system. Regards Hersh On 7 July 2016 at 06:26, Venkata Balaji N <nag1010 at gmail.com> wrote:> On Thu, Jul 7, 2016 at 10:31 AM, Frank Cox <theatre at melvilletheatre.com> > wrote: > > > On Thu, 7 Jul 2016 10:16:23 +1000 > > Venkata Balaji N wrote: > > > > > i left the system locked overnight. > > > > What are you using to lock the screen? Some of the screensavers can be > > bad news on certain video cards (as I've learned the hard way) and can > > cause just exactly that to happen. In that case, the screensaver has > > locked up your video card. > > > > If this is the case, try a different screensaver. I suggest "black > screen > > only" for testing purposes. > > > > I did the following and rebooted, all worked fine. I am not sure if that is > the solution. > > [root at buildhost ~]# systemctl set-default graphical.target > > Regards, > VB > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >
On Thu, Jul 7, 2016 at 2:00 PM, Hersh <parikhh1 at gmail.com> wrote:> Hi Venkata, > > Can you please let me know the steps which you have followed for > re-installing the GNOME? I am having a similar problem on one of our > system. >To my understanding, when you install centos-7 with options ServerGUI or GNOME Desktop and leave the system for long time locked, you will notice that CentOS slips into textual interface mode and you will not be able to get GUI which means, you can login to the system and cannot see GUI screen. I have found the following steps on google, which helped me get through this problem systemctl disable gdm.service systemctl enable lightdm.service systemctl set-default graphical.target First command was successful, second one error'd out. Not sure what to do, i reverted back the first command and executed the third command and rebooted. All worked fine ! Below is the log - [root at buildhost ~]# systemctl disable gdm.service Removed symlink /etc/systemd/system/display-manager.service. [root at buildhost ~]# systemctl enable lightdm.service Failed to execute operation: Access denied [root at buildhost ~]# systemctl disable gdm.service [root at buildhost ~]# systemctl enable gdm.service Created symlink from /etc/systemd/system/display-manager.service to /usr/lib/systemd/system/gdm.service. [root at buildhost ~]# systemctl set-default graphical.target Removed symlink /etc/systemd/system/default.target. I think, the last command made sense to me. Regards, VB