Proxmox 7 - Monitor said Out of range

JakubKuba

New Member
Aug 28, 2021
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In our company today I tried to upgrade Proxmox from version 6.x to version 7.

The upgrade completed correctly (via apt), but after GRUB, the monitor displays an Out of range message. I tried about 4 different monitors. All monitors showed a similar message (See Picture 2).

The last screen I can see on monitor, is as on Picture 1.



However, if I select an older kernel, specifically 5.4.x, monitor works correctly. The problem occurs when using the shipped kernel version 5.11.




Since the problem has not been resolved, I tried performing a clean install of Proxmox 7. Unfortunately, I received the same behavior as above.




Since the upgrade failed, I had to do a clean install of PVE 6.x again, and restore vms from backup, this works correctly.



How can I switch from PVE 6 to 7?

Server Fujitsu RX300 S6, monitor connected via VGA.


Picture 1 (This picture is for illustration only):
boot-grub.png

Picture 2:
IMG_20210828_120153.jpg