All of lore.kernel.org
 help / color / mirror / Atom feed
* Xen Paravirt Operations Domain 0 Serial Console Problem
@ 2009-08-24 16:17 Mr. Teo En Ming (Zhang Enming)
  2009-08-24 16:21 ` Mr. Teo En Ming (Zhang Enming)
  2009-08-24 16:44 ` Pasi Kärkkäinen
  0 siblings, 2 replies; 34+ messages in thread
From: Mr. Teo En Ming (Zhang Enming) @ 2009-08-24 16:17 UTC (permalink / raw)
  To: xen-devel

Hi All,

I have tried to configure serial console for Xen hypervisor, dom 0 
kernel and Linux login but it does not seem to be working.

Here is my grub configuration for serial console:

title Fedora (2.6.31-rc6-enming.teo) Serial Console
         root (hd0,0)
         kernel /xen.gz iommu=1 com1=115200,8n1 console=com1
         module /vmlinuz-2.6.31-rc6-enming.teo ro 
root=/dev/mapper/vg_fedora11_host-lv_root selinux=0 console=ttyS0,115200
         module /initrd-2.6.31-rc6-enming.teo.img

Is the above configuration correct? On my Intel Desktop Board DQ45CB, I 
have a COM1 header on the PCB and I have connected an external serial 
port to this header and also enabled COM1 in the BIOS.

After selecting the above entry in GRUB still on VGA, a cursor at the 
top left corner of the monitor shows up, which means Xen and Dom 0 
kernel are booting up on the serial console and not on VGA.

However, after some time, a login prompt finally displays on my VGA 
monitor! Isn't it NOT supposed to show up on VGA and should show up in 
serial console instead?

All the while I get nothing displayed on the Windows laptop connected to 
the serial console of the Xen machine. I am using Windows Hyper Terminal 
with a null modem cable and a USB-to-Serial converter cable.

After seeing nothing on Hyper Terminal, I go to the VGA console (tty1) 
and keyboard and pressed CTRL-ALT-DEL to reboot the Xen machine.

Then finally I see this screenshot:

http://2.bp.blogspot.com/_zzjv8MCM2sk/SpK6D_eSIfI/AAAAAAAAATs/NdSPpfddTvQ/s1600-h/xen+serial+console.JPG

After that, I select rebooting using serial console but I still see 
nothing on Hyper Terminal.

May I know what's happening and what's wrong with serial console?

Thank you.

-- 
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering) BEng(Hons)(Mechanical Engineering)
Technical Support Engineer
Information Technology Department
Asiasoft Online Pte Ltd
Tampines Central 1 #04-01 Tampines Plaza
Singapore 529541
Republic of Singapore
Mobile: +65-9648-9798
MSN: teoenming@hotmail.com
Alma Maters: Singapore Polytechnic, National University of Singapore

^ permalink raw reply	[flat|nested] 34+ messages in thread

end of thread, other threads:[~2009-08-25  6:53 UTC | newest]

Thread overview: 34+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-08-24 16:17 Xen Paravirt Operations Domain 0 Serial Console Problem Mr. Teo En Ming (Zhang Enming)
2009-08-24 16:21 ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 16:44 ` Pasi Kärkkäinen
2009-08-24 17:34   ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 17:37     ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 17:57     ` Pasi Kärkkäinen
2009-08-24 17:59       ` Pasi Kärkkäinen
2009-08-24 18:06       ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 18:15         ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 18:28           ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 18:31             ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 18:35               ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 18:45           ` Alan Cox
2009-08-24 19:13             ` Pasi Kärkkäinen
2009-08-24 19:23               ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 19:33                 ` Mr. Teo En Ming (Zhang Enming)
2009-08-24 19:35                   ` Mr. Teo En Ming (Zhang Enming)
2009-08-25  0:49                     ` Mr. Teo En Ming (Zhang Enming)
2009-08-25  0:57                       ` Mr. Teo En Ming (Zhang Enming)
2009-08-25  0:59                         ` VGA Passthrough with Intel DQ45CB and NVIDIA Geforce 8400 GS PCI Express x16 Mr. Teo En Ming (Zhang Enming)
2009-08-25  2:09                           ` Han, Weidong
2009-08-25  2:44                             ` Teo En Ming (Zhang Enming)
2009-08-25  3:05                               ` Han, Weidong
2009-08-25  3:08                                 ` Teo En Ming (Zhang Enming)
2009-08-25  2:04                   ` Xen Paravirt Operations Domain 0 Serial Console Problem Han, Weidong
2009-08-25  2:40                     ` Xen Paravirt Operations Domain 0 Serial ConsoleProblem Teo En Ming (Zhang Enming)
2009-08-25  2:50                       ` Teo En Ming (Zhang Enming)
2009-08-25  3:03                         ` Han, Weidong
2009-08-25  3:06                           ` Xen Paravirt Operations Domain 0 SerialConsoleProblem Teo En Ming (Zhang Enming)
2009-08-25  3:10                             ` Teo En Ming (Zhang Enming)
2009-08-25  3:28                             ` Han, Weidong
2009-08-25  3:51                               ` Teo En Ming (Zhang Enming)
2009-08-25  4:17                                 ` Teo En Ming (Zhang Enming)
2009-08-25  6:53                                   ` Pasi Kärkkäinen

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.