Hi, I just install xen and kernel-xen version 2.6.18-194.26.1.el5xen, booting into the xen kernel dom0 shows me continous colorful scrambling and scrolling. I can ssh to dom0 and get correct display but the dom0 console is where it shows the colorful garbage scrolling. i have the Supermicro X7DC motherboard with a XGI Z9 graphics card. GUI is not installed and I don''t have the rhgb parameter in my grub.conf. My grub.conf is plain and unmodified. #boot=/dev/md0 default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-194.26.1.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-194.26.1.el5 module /vmlinuz-2.6.18-194.26.1.el5xen ro root=/dev/VG_ROOT/LV_ROOT module /initrd-2.6.18-194.26.1.el5xen.img title CentOS (2.6.18-194.26.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-194.26.1.el5 ro root=/dev/VG_ROOT/LV_ROOT initrd /initrd-2.6.18-194.26.1.el5.img title CentOS (2.6.18-194.el5) root (hd0,0) kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VG_ROOT/LV_ROOT initrd /initrd-2.6.18-194.el5.img Tried adding the "vga=<vesa mode>" parameter in grub for the Xen kernel, but that didn''t work. I also ran into this thread http://lists.xensource.com/archives/html/xen-api/2010-06/msg00015.html But that didn¹t help. Can someone help? Thank you _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Aidan, Am 29.12.2010 schrieb "Aidan Wong <awong@xen.com>":> Hi, > > I just install xen and kernel-xen version 2.6.18-194.26.1.el5xen, booting > into the xen kernel dom0 shows me continous colorful scrambling and > scrolling. > I can ssh to dom0 and get correct display but the dom0 console is where it > shows the colorful garbage scrolling. > i have the Supermicro X7DC motherboard with a XGI Z9 graphics card. > GUI is not installed and I don''t have the rhgb parameter in my grub.conf. > My grub.conf is plain and unmodified. > > #boot=/dev/md0 > default=0 > timeout=5 > splashimage=(hd0,0)/grub/splash.xpm.gz > hiddenmenu > title CentOS (2.6.18-194.26.1.el5xen) > root (hd0,0) > kernel /xen.gz-2.6.18-194.26.1.el5 > module /vmlinuz-2.6.18-194.26.1.el5xen ro root=/dev/VG_ROOT/LV_ROOT > module /initrd-2.6.18-194.26.1.el5xen.img > title CentOS (2.6.18-194.26.1.el5) > root (hd0,0) > kernel /vmlinuz-2.6.18-194.26.1.el5 ro root=/dev/VG_ROOT/LV_ROOT > initrd /initrd-2.6.18-194.26.1.el5.img > title CentOS (2.6.18-194.el5) > root (hd0,0) > kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VG_ROOT/LV_ROOT > initrd /initrd-2.6.18-194.el5.img > > > Tried adding the "vga=<vesa mode>" parameter in grub for the Xen kernel, but > that didn''t work. > > I also ran into this thread > http://lists.xensource.com/archives/html/xen-api/2010-06/msg00015.html > But that didn¹t help. > > Can someone help?There was a discussion on xen-devel with a similar problem: http://lists.xensource.com/archives/html/xen-devel/2010-09/msg01112.html Perhaps this helps? Dietmar.> > Thank you >-- Company details: http://ts.fujitsu.com/imprint.html _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Dietmar, Thanks for replying The user seems to be using X which I''m not even using. The user apparently uses a newer version of Xen than I do, but prior to posting my problem, I''ve used a PVOPS kernel and Xen version 3.4.3 and version 4.0.1 directly from Xen. I restarted from scratch and now use the CentOS / RH built Xen kernel and Xen 3.1.2 which is also RH maintained. I tried disabing "Intel Virtualization Technology" (which is Vt-d, I think...) in my BIOS setting but that didn''t work, I''m still getting the scrolling colorful garbage on the Dom0 console. I''d like to try to patch my CentOS Dom0 Xen kernel but exactly sure how, can you provide some pointers? Thank you On Tue, Dec 28, 2010 at 10:29 PM, Dietmar Hahn <dietmar.hahn@ts.fujitsu.com>wrote:> Hi Aidan, > > Am 29.12.2010 schrieb "Aidan Wong <awong@xen.com>": > > > Hi, > > > > > > I just install xen and kernel-xen version 2.6.18-194.26.1.el5xen, booting > > > into the xen kernel dom0 shows me continous colorful scrambling and > > > scrolling. > > > I can ssh to dom0 and get correct display but the dom0 console is where > it > > > shows the colorful garbage scrolling. > > > i have the Supermicro X7DC motherboard with a XGI Z9 graphics card. > > > GUI is not installed and I don''t have the rhgb parameter in my > grub.conf. > > > My grub.conf is plain and unmodified. > > > > > > #boot=/dev/md0 > > > default=0 > > > timeout=5 > > > splashimage=(hd0,0)/grub/splash.xpm.gz > > > hiddenmenu > > > title CentOS (2.6.18-194.26.1.el5xen) > > > root (hd0,0) > > > kernel /xen.gz-2.6.18-194.26.1.el5 > > > module /vmlinuz-2.6.18-194.26.1.el5xen ro root=/dev/VG_ROOT/LV_ROOT > > > module /initrd-2.6.18-194.26.1.el5xen.img > > > title CentOS (2.6.18-194.26.1.el5) > > > root (hd0,0) > > > kernel /vmlinuz-2.6.18-194.26.1.el5 ro root=/dev/VG_ROOT/LV_ROOT > > > initrd /initrd-2.6.18-194.26.1.el5.img > > > title CentOS (2.6.18-194.el5) > > > root (hd0,0) > > > kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VG_ROOT/LV_ROOT > > > initrd /initrd-2.6.18-194.el5.img > > > > > > > > > Tried adding the "vga=<vesa mode>" parameter in grub for the Xen kernel, > but > > > that didn''t work. > > > > > > I also ran into this thread > > > http://lists.xensource.com/archives/html/xen-api/2010-06/msg00015.html > > > But that didn¹t help. > > > > > > Can someone help? > > There was a discussion on xen-devel with a similar problem: > > http://lists.xensource.com/archives/html/xen-devel/2010-09/msg01112.html > > Perhaps this helps? > > Dietmar. > > > > > > Thank you > > > > > -- > > Company details: http://ts.fujitsu.com/imprint.html >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Am 30.12.2010 schrieb "Aidan Wong <awong@xen.com>":> Hi Dietmar, > > Thanks for replying > > The user seems to be using X which I''m not even using. The user apparently > uses a newer version of Xen than I do, but prior to posting my problem, I''ve > used a PVOPS kernel and Xen version 3.4.3 and version 4.0.1 directly from > Xen. I restarted from scratch and now use the CentOS / RH built Xen kernel > and Xen 3.1.2 which is also RH maintained. > I tried disabing "Intel Virtualization Technology" (which is Vt-d, I > think...) in my BIOS setting but that didn''t work, I''m still getting the > scrolling colorful garbage on the Dom0 console.OK, then your problem seems to be another one because the mentioned problem was only seen with Vt-d enabled - the real cause was a buggy bios and a workaround was done in the hypervisor.> > I''d like to try to patch my CentOS Dom0 Xen kernel but exactly sure how, can > you provide some pointers?Maybe you can try not to use a graphics mode for dom0 console. I mean, try to add vga=ask in the boot line (grub.conf) and select an ascii mode. Dietmar.> > > Thank you > > > On Tue, Dec 28, 2010 at 10:29 PM, Dietmar Hahn > <dietmar.hahn@ts.fujitsu.com>wrote: > > > Hi Aidan, > > > > Am 29.12.2010 schrieb "Aidan Wong <awong@xen.com>": > > > > > Hi, > > > > > > > > > > I just install xen and kernel-xen version 2.6.18-194.26.1.el5xen, booting > > > > > into the xen kernel dom0 shows me continous colorful scrambling and > > > > > scrolling. > > > > > I can ssh to dom0 and get correct display but the dom0 console is where > > it > > > > > shows the colorful garbage scrolling. > > > > > i have the Supermicro X7DC motherboard with a XGI Z9 graphics card. > > > > > GUI is not installed and I don''t have the rhgb parameter in my > > grub.conf. > > > > > My grub.conf is plain and unmodified. > > > > > > > > > > #boot=/dev/md0 > > > > > default=0 > > > > > timeout=5 > > > > > splashimage=(hd0,0)/grub/splash.xpm.gz > > > > > hiddenmenu > > > > > title CentOS (2.6.18-194.26.1.el5xen) > > > > > root (hd0,0) > > > > > kernel /xen.gz-2.6.18-194.26.1.el5 > > > > > module /vmlinuz-2.6.18-194.26.1.el5xen ro root=/dev/VG_ROOT/LV_ROOT > > > > > module /initrd-2.6.18-194.26.1.el5xen.img > > > > > title CentOS (2.6.18-194.26.1.el5) > > > > > root (hd0,0) > > > > > kernel /vmlinuz-2.6.18-194.26.1.el5 ro root=/dev/VG_ROOT/LV_ROOT > > > > > initrd /initrd-2.6.18-194.26.1.el5.img > > > > > title CentOS (2.6.18-194.el5) > > > > > root (hd0,0) > > > > > kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VG_ROOT/LV_ROOT > > > > > initrd /initrd-2.6.18-194.el5.img > > > > > > > > > > > > > > > Tried adding the "vga=<vesa mode>" parameter in grub for the Xen kernel, > > but > > > > > that didn''t work. > > > > > > > > > > I also ran into this thread > > > > > http://lists.xensource.com/archives/html/xen-api/2010-06/msg00015.html > > > > > But that didn¹t help. > > > > > > > > > > Can someone help? > > > > There was a discussion on xen-devel with a similar problem: > > > > http://lists.xensource.com/archives/html/xen-devel/2010-09/msg01112.html > > > > Perhaps this helps? > > > > Dietmar. > > > > > > > > > > Thank you >-- Company details: http://ts.fujitsu.com/imprint.html _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Dietmar, It''s fixed. I did as you suggested and added vga=ask and select a mode but that didn''t work. I went and updated my BIOS and voila. Re-enabling "Intel Virtualization Technology" in my BIOS also works, no more scrambling scrolling display in Dom0 console. Thanks On Mon, Jan 3, 2011 at 1:04 AM, Dietmar Hahn <dietmar.hahn@ts.fujitsu.com>wrote:> Am 30.12.2010 schrieb "Aidan Wong <awong@xen.com>": > > > Hi Dietmar, > > > > > > Thanks for replying > > > > > > The user seems to be using X which I''m not even using. The user > apparently > > > uses a newer version of Xen than I do, but prior to posting my problem, > I''ve > > > used a PVOPS kernel and Xen version 3.4.3 and version 4.0.1 directly from > > > Xen. I restarted from scratch and now use the CentOS / RH built Xen > kernel > > > and Xen 3.1.2 which is also RH maintained. > > > I tried disabing "Intel Virtualization Technology" (which is Vt-d, I > > > think...) in my BIOS setting but that didn''t work, I''m still getting the > > > scrolling colorful garbage on the Dom0 console. > > OK, then your problem seems to be another one because the mentioned problem > > was only seen with Vt-d enabled - the real cause was a buggy bios and a > > workaround was done in the hypervisor. > > > > > > I''d like to try to patch my CentOS Dom0 Xen kernel but exactly sure how, > can > > > you provide some pointers? > > Maybe you can try not to use a graphics mode for dom0 console. I mean, try > to add > > vga=ask in the boot line (grub.conf) and select an ascii mode. > > Dietmar. > > > > > > > > > Thank you > > > > > > > > > On Tue, Dec 28, 2010 at 10:29 PM, Dietmar Hahn > > > <dietmar.hahn@ts.fujitsu.com>wrote: > > > > > > > Hi Aidan, > > > > > > > > Am 29.12.2010 schrieb "Aidan Wong <awong@xen.com>": > > > > > > > > > Hi, > > > > > > > > > > > > > > > > > > I just install xen and kernel-xen version 2.6.18-194.26.1.el5xen, > booting > > > > > > > > > into the xen kernel dom0 shows me continous colorful scrambling and > > > > > > > > > scrolling. > > > > > > > > > I can ssh to dom0 and get correct display but the dom0 console is > where > > > > it > > > > > > > > > shows the colorful garbage scrolling. > > > > > > > > > i have the Supermicro X7DC motherboard with a XGI Z9 graphics card. > > > > > > > > > GUI is not installed and I don''t have the rhgb parameter in my > > > > grub.conf. > > > > > > > > > My grub.conf is plain and unmodified. > > > > > > > > > > > > > > > > > > #boot=/dev/md0 > > > > > > > > > default=0 > > > > > > > > > timeout=5 > > > > > > > > > splashimage=(hd0,0)/grub/splash.xpm.gz > > > > > > > > > hiddenmenu > > > > > > > > > title CentOS (2.6.18-194.26.1.el5xen) > > > > > > > > > root (hd0,0) > > > > > > > > > kernel /xen.gz-2.6.18-194.26.1.el5 > > > > > > > > > module /vmlinuz-2.6.18-194.26.1.el5xen ro root=/dev/VG_ROOT/LV_ROOT > > > > > > > > > module /initrd-2.6.18-194.26.1.el5xen.img > > > > > > > > > title CentOS (2.6.18-194.26.1.el5) > > > > > > > > > root (hd0,0) > > > > > > > > > kernel /vmlinuz-2.6.18-194.26.1.el5 ro root=/dev/VG_ROOT/LV_ROOT > > > > > > > > > initrd /initrd-2.6.18-194.26.1.el5.img > > > > > > > > > title CentOS (2.6.18-194.el5) > > > > > > > > > root (hd0,0) > > > > > > > > > kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VG_ROOT/LV_ROOT > > > > > > > > > initrd /initrd-2.6.18-194.el5.img > > > > > > > > > > > > > > > > > > > > > > > > > > > Tried adding the "vga=<vesa mode>" parameter in grub for the Xen > kernel, > > > > but > > > > > > > > > that didn''t work. > > > > > > > > > > > > > > > > > > I also ran into this thread > > > > > > > > > > http://lists.xensource.com/archives/html/xen-api/2010-06/msg00015.html > > > > > > > > > But that didn¹t help. > > > > > > > > > > > > > > > > > > Can someone help? > > > > > > > > There was a discussion on xen-devel with a similar problem: > > > > > > > > > http://lists.xensource.com/archives/html/xen-devel/2010-09/msg01112.html > > > > > > > > Perhaps this helps? > > > > > > > > Dietmar. > > > > > > > > > > > > > > > > > > Thank you > > > > > -- > > Company details: http://ts.fujitsu.com/imprint.html >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users