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<div class="moz-cite-prefix">I get the same effect of screen blank
on memory scrub.<br>
<br>
Just as a test try turning off the memory scrub in the xen boot
options.<br>
<br>
I wonder if xen overwrites the video-ram memory as its cleaning
up.<br>
<br>
On 02/22/2016 01:06 PM, Scot P. Floess wrote:<br>
</div>
<blockquote
cite="mid:alpine.LRH.2.20.1602221304100.3444@admincloud.flossware.com"
type="cite">Francis,
<br>
<br>
I just rebooted my Precision 470 and watched...nothing :(
<br>
<br>
I see the boot menu, and then everything goes blank - as in just a
blinking cursor until I get the login prompt.
<br>
<br>
No idea what it's doing - but I don't even see the scrubbing free
memory output...
<br>
<br>
On Mon, 22 Feb 2016, Francis Greaves wrote:
<br>
<br>
<blockquote type="cite">Yes I usually work headless, but I have
been setting it up from new, so need to see what is going on.
<br>
Regards
<br>
Francis
<br>
<br>
<br>
_________________________________________________________________________________________________________________________________________________________
<br>
From: "Scot P. Floess" <a class="moz-txt-link-rfc2396E" href="mailto:sfloess@nc.rr.com"><sfloess@nc.rr.com></a>
<br>
To: "Francis Greaves" <a class="moz-txt-link-rfc2396E" href="mailto:francis@choughs.net"><francis@choughs.net></a>
<br>
Cc: "centos-virt" <a class="moz-txt-link-rfc2396E" href="mailto:centos-virt@centos.org"><centos-virt@centos.org></a>
<br>
Sent: Monday, 22 February, 2016 17:02:12
<br>
Subject: Re: [CentOS-virt] Garbled screen after RAM Scrub on
boot
<br>
<br>
When I was running Fedora 23 and using Xen (as the host OS), I
saw
<br>
something similar on my Dell Precision 470. I don't recall
seeing it now
<br>
with CentOS 7, but I tend to boot that machine headless more
than not...
<br>
<br>
On Mon, 22 Feb 2016, Francis Greaves wrote:
<br>
<br>
> Dear All
<br>
> I am using Centos 7 with Xen 4.6 on a Dell Poweredge T430
<br>
> 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
<br>
> what is happening as the machine boots. Also there is
nothing on the screen when I reboot.
<br>
>
<br>
> My /etc/default/grub is
<br>
>
<br>
> GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g'
/etc/system-release)"
<br>
> GRUB_DEFAULT=saved
<br>
> GRUB_DISABLE_SUBMENU=true
<br>
> GRUB_CMDLINE_LINUX="crashkernel=auto rhgb
intremap=no_x2apic_optout"
<br>
> GRUB_CMDLINE_XEN_DEFAULT="dom0_mem=13312M,max:14336M
dom0_max_vcpus=6 dom0_vcpus_pin"
<br>
> GRUB_GFXMODE=1024x768
<br>
> GRUB_GFXPAYLOAD_LINUX=keep
<br>
> GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT="console=hvc0
earlyprintk=xen nomodeset"
<br>
>
<br>
> 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
<br>
> makes no difference
<br>
>
<br>
> What am I doing wrong?
<br>
>
<br>
> Regards
<br>
> Francis
<br>
>
<br>
>
<br>
<br>
Scot P. Floess RHCT (Certificate Number
605010084735240)
<br>
Chief Architect FlossWare
<a class="moz-txt-link-freetext" href="http://sourceforge.net/projects/flossware">http://sourceforge.net/projects/flossware</a>
<br>
<a class="moz-txt-link-freetext" href="http://flossware.sourceforge.net">http://flossware.sourceforge.net</a>
<br>
<a class="moz-txt-link-freetext" href="https://github.com/organizations/FlossWare">https://github.com/organizations/FlossWare</a>
<br>
<br>
<br>
</blockquote>
<br>
Scot P. Floess RHCT (Certificate Number
605010084735240)
<br>
Chief Architect FlossWare
<a class="moz-txt-link-freetext" href="http://sourceforge.net/projects/flossware">http://sourceforge.net/projects/flossware</a>
<br>
<a class="moz-txt-link-freetext" href="http://flossware.sourceforge.net">http://flossware.sourceforge.net</a>
<br>
<a class="moz-txt-link-freetext" href="https://github.com/organizations/FlossWare">https://github.com/organizations/FlossWare</a><br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
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</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Alvin Starr || voice: (905)513-7688
Netvel Inc. || Cell: (416)806-0133
<a class="moz-txt-link-abbreviated" href="mailto:alvin@netvel.net">alvin@netvel.net</a> ||
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