I am unable to update my display resolution of Centos7 which was installed in the Hyper-v of Windows 8.1.
Earlier I have faced the same problem in VirtualBox but it was resolved after installing VirtualBox Guest Additions.
In hyper-v, after installing the Linux integration tools I can't use the mouse it and some other problem also happened. Can you give me any idea to get rid of this. I have tried to use the following commands
grubby --update-kernel=ALL --args="video=hyperv_fb:1280x1024"
sudo grubby --update-kernel=ALL --args="video=hyperv_fb:1280x1024"
system-config-display --reconfig --set-resolution=1920x1200
but nothing helped me.
Best Answer
There is a known problem with VMs on Hyper-V unable to set the screen to a high resolution, with no way of changing it either from KDE System Settings or Hyper-V virtual machine properties.
The problem is with the frame buffer driver of Hyper-V. CentOS provides a tool called
grubby
for managinggrub.cfg
which is much easier to work with than editing/etc/default/grub
and runningupdate-grub
.To set the desired screen resolution under Hyper-V, open a terminal and execute:
then reboot. Replace
2560x1440
with the desired screen resolution.If you find that you are still unable under Hyper-V to reach the desired resolution, the other solution is to install xrdp and use remote desktop. See the article Install xrdp on CentOS 7 / RHEL 7.