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[Xen-bugs] [Bug 1766] New: [QEMU]guest shows white screen when using xl

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Subject: [Xen-bugs] [Bug 1766] New: [QEMU]guest shows white screen when using xl vnc to connect it
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Date: Sat, 7 May 2011 01:29:47 -0700
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           Summary: [QEMU]guest shows white screen when using xl vnc to
                    connect it
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Tools
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: yang.z.zhang@xxxxxxxxx

Service Arch (ia32/ia32e/IA64):ia32e 
Guest Arch (ia32/ia32e/IA64): 
Guest OS Type (Linux/Windows):Linux
Change Set: 23246:eb4505f8dd97
Hardware: Sandybridge

xen-changeset:   23246:eb4505f8dd97
xen-date:        Wed Apr 20 12:02:51 2011 +0100

pvops git:
commit 6dfaa17ac8efc3c7cd5bd430e9c68fcd2a012099
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
Date:   Mon Apr 18 18:38:07 2011 -0700

ioemu git:
commit e073e69457b4d99b6da0b6536296e3498f7f6599
Author: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date:   Fri Feb 11 17:54:51 2011 +0000

Bug detailed description:
For the latest xen-unstable(cs 23246), we cannot connect guest by using xl vnc
or sdl.Seems there have problem with qemu vga driver. But guest still live, we
can use ssh or xl con to connect it. Also there have some error output in
serial, please check the attachment to have a look

Reproduce steps:
1.Prepare the config file and create guest by it.
2.We found the guest show white screen.

Current result:

guest show white screen

Expected result:

guest boot well

Basic root-causing log:

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