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xen-users
Re: [Xen-users] No video display, SuSE kernel-xen-2.6.11.4-21.7
>My grub config:
>
> title XEN
> kernel (hd0,0)/xen.gz dom0_mem=204800
> module (hd0,0)/vmlinuz-xen root=/dev/system/dom0_root_hdc
> selinux=0 splash
Try adding console=tty0 to the line above
> =silent showopts
> module (hd0,0)/initrd-xen
>
On Mon, 2005-06-13 at 19:34 +0100, Robbie Dinn wrote:
> Hi all
>
> This is a strange one. On upgraging to SuSE kernel-2.6.11.4-21.7, I have
> suddenly found that I loose the video on boot up! The video disappears
> very early in boot, possibly while Xen hypervisor is starting, printing
> out the physical memory map.
>
> If you are patient and wait for the machine to reach run level 5,
> the X server starts up and you get a picture back. You can then
> switch back and forth between virtual terminal 7 (X server) and
> virtual terminals 1 to 6 (which remain black).
>
> I put an osciloscope on the VGA sync to see what they were doing.
> They look fine, HSync 31.5KHz, 3.6uS high 27.9uS low,
> VSync 62.5Hz, 2 lines low, ~448 line high
> (This is with virtual terminal 1 selected ).
>
> I have seen this on two different machines.
>
> First is a Mitac laptop, Athlon64 process (running 32 bit mode),
> Via chip set, ATI Radeon 9600 M10 video
>
> Second is a Pentium III board, BX chip set, Chips & Technologies
> 69000 video.
>
> Software in use...
>
> Xen:
> From 'xm dmesg'
> Xen version 2.0.6a-0.1 (abuild@xxxxxxx) (gcc version 3.3.5 20050117
> (prerelease
> ) (SUSE Linux)) Fri Jun 10 19:30:50 UTC 2005
>
> This is the xen-2.0.6a-0.1.i586.rpm from Kurt Garloff's page.
>
> I have also tried a xen-2.0-testing that I compiled myself
> (with the rev 1.1899 "Ensure we only handle writable pagetable faults
> taken in guest kernel")
> Same outcome
>
> kernel on domO:
>
> paradox:~ # rpm -q kernel-xen
> kernel-xen-2.6.11.4-21.7
> paradox:~ #
>
> This is a kernel down loaded from Kurt Garloff's Page
>
> I also tried a kernel that I compiled myself with the
> SuSE kernel sources that were release last week. I got the
> same misbehaviour. I thought that this was due to my error
> in configuring the kernel. I tried recompiling with
> CONFIG_FB turned off, but that did not help.
>
> My grub config:
>
> title XEN
> kernel (hd0,0)/xen.gz dom0_mem=204800
> module (hd0,0)/vmlinuz-xen root=/dev/system/dom0_root_hdc
> selinux=0 splash
> =silent showopts
> module (hd0,0)/initrd-xen
>
> (hd0,0 is my /boot partition
> these symbolic links are in place
>
> paradox:~ # ls -l /boot/xen.gz
> lrwxrwxrwx 1 root root 17 Jun 13 13:11 /boot/xen.gz -> xen-2.0.6a-0.1.gz
> paradox:~ # ls -l /boot/vmlinuz-xen
> lrwxrwxrwx 1 root root 25 Jun 13 13:11 /boot/vmlinuz-xen ->
> vmlinuz-2.6.11.4-21.7-xen
> paradox:~ # ls -l /boot/initrd-xen
> lrwxrwxrwx 1 root root 24 Jun 13 13:11 /boot/initrd-xen ->
> initrd-2.6.11.4-21.7-xen
>
> My initrd has these modules in it:
>
> paradox:~ # zcat /boot/initrd-2.6.11.4-21.7-xen | cpio -i -t | grep -E
> '^lib/modules'
> 7161 blocks
> lib/modules
> lib/modules/2.6.11.4-21.7-xen
> lib/modules/2.6.11.4-21.7-xen/kernel
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/ide
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/ide/ide-core.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/ide/pci
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/ide/pci/piix.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/ide/ide-disk.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/ide/ide-cd.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/md
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/md/raid1.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/md/dm-mod.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/md/dm-snapshot.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/cdrom
> lib/modules/2.6.11.4-21.7-xen/kernel/drivers/cdrom/cdrom.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/fs
> lib/modules/2.6.11.4-21.7-xen/kernel/fs/jbd
> lib/modules/2.6.11.4-21.7-xen/kernel/fs/jbd/jbd.ko
> lib/modules/2.6.11.4-21.7-xen/kernel/fs/ext3
> lib/modules/2.6.11.4-21.7-xen/kernel/fs/ext3/ext3.ko
> paradox:~ #
>
> None of this is causing me any great problem because
> the machine is sitting in a server rack in another
> room. I can ssh to it or use the serial console.
>
> It will confuse the hell out of a new user though!
>
> Does anyone have any suggests as to what to try to debug/fix this?
>
> Robbie Dinn
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
--
Regards,
David F Barrera
Linux Technology Center
Systems and Technology Group, IBM
"The wisest men follow their own direction. "
Euripides
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