Re: Xen4CentOS installation strangeness

[Peter Peltonen <peter.peltonen@xxxxxxxxx>]

Hi,

On Tue, Mar 4, 2014 at 10:08 PM, Robert Dinse <nanook@xxxxxxxxxx> wrote:

     I'd look in the logs for Xorg failures.

Thanks Robert, it seems Xorg is indeed the one to blame in this case. Apparently the network issues I experienced at the same time were just bad luck and not related, so while booting another time I could SSH into the system. 

These errors are visible in the Xorg logs:

"

[   128.186] (EE) 

[   128.186] (EE) Backtrace:

[   128.186] (EE) 0: X (xorg_backtrace+0x36) [0x46d196]

[   128.186] (EE) 1: X (0x400000+0x72f99) [0x472f99]

[   128.186] (EE) 2: /lib64/libpthread.so.0 (0x7fb7b6fa3000+0xf710) [0x7fb7b6fb2710]

[   128.186] (EE) 3: /usr/lib64/xorg/modules/drivers/xgi_drv.so (0x7fb7b4459000+0x21a95) [0x7fb7b447aa95]

[   128.186] (EE) 4: /usr/lib64/xorg/modules/drivers/xgi_drv.so (0x7fb7b4459000+0x23159) [0x7fb7b447c159]

[   128.186] (EE) 5: X (dixSaveScreens+0x15e) [0x4695ee]

[   128.186] (EE) 6: X (0x400000+0x7d061) [0x47d061]

[   128.186] (EE) 7: /lib64/libc.so.6 (__libc_start_main+0xfd) [0x7fb7b56a3d1d]

[   128.187] (EE) 8: X (0x400000+0x26189) [0x426189]

[   128.187] (EE) 

[   128.187] (EE) Segmentation fault at address 0x0

[   128.187] 

Fatal server error:

[   128.187] Caught signal 11 (Segmentation fault). Server aborting

[   128.187] 

[   128.187] (EE) 

Please consult the CentOS support 

"

Some more googling revealed that other people have had similar problems. This is most likely caused by either Xen or the new Xen enabled kernel that was installed as with stock CentOS6 kernel it is not happening. I ran some hardware diagnostics tests for the motherboard and CPUs which passed ok.

I tried creating a new Xorg configuration file and starting X with that, but it did not help. Changing the server's runlevel to 3 resulted the server to boot ok in non-graphical mode. As I can run virt-manager remotely, there is no reason for me to debug this further, and I just wanted to report the issues I've experienced here on the list.

Regards,

Peter

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