On Tue, 23 Feb 2016 14:40, Francis Greaves wrote:
Dear George,
Thanks for the input and ideas.
Unfortunately bootscrub=false dos not work, not does setting nothing for vga, still get the 'Little white squares'!
I am asking the xen-users as you suggest
Regards, Francis
From: "George Dunlap"
To: "Francis Greaves" , "centos-virt"
Sent: Tuesday, 23 February, 2016 09:31:40
Subject: Re: Garbled screen after RAM Scrub on boot
On Mon, Feb 22, 2016 at 4:18 PM, Francis Greaves wrote:
Dear All
I am using Centos 7 with Xen 4.6 on a Dell Poweredge T430
When the machine boots, after the 'Scrubbing Free RAM' message, I get a
screen filled with little white squares until the login prompt, so I cannot
see what is happening as the machine boots. Also there is nothing on the
screen when I reboot.
My /etc/default/grub is
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_CMDLINE_LINUX="crashkernel=auto rhgb intremap=no_x2apic_optout"
_________________________________________^
If you no not NEED a gfx boot at bare metal, remove the "rhgb" string,
this switches grub from a "full graphic" mode to a "hires textmode",
AFAICS, this also influences all grub instances in the whole XEN
infrastructure, so it could be a influence.
GRUB_CMDLINE_XEN_DEFAULT="dom0_mem=13312M,max:14336M dom0_max_vcpus=6 dom0_vcpus_pin"
GRUB_GFXMODE=1024x768
GRUB_GFXPAYLOAD_LINUX=keep
GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT="console=hvc0 earlyprintk=xen
nomodeset"
I have tried setting (for a 1024x768 resolution) vga=792 in the
GRUB_CMDLINE_LINUX and commenting out GRUB_GFXMODE and
GRUB_GFXPAYLOAD_LINUX, but this makes no difference
What am I doing wrong?
[snip]
- Yamaban.
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