Hi, i just installed CentOS 7.2 on my little "server" but i get a black screen during boot. It is a Asrock Am1h-itx mainboard with an AMD 5350 CPU (onboard graphic). I created a raid 6 but i dont think thats the problem, as the boot process goes pretty far. I would even say its going until X should start, but it is a server install, so i guess there is no X. Can someone tell me what could i do to get more information? Is there some kind of nomodeset param available for the grub cmd line param which i could try?
Thanks
On 16 May 2016 12:13, "Oliver Zemann" oliver.zemann@gmail.com wrote:
Hi, i just installed CentOS 7.2 on my little "server" but i get a black
screen during boot. It is a Asrock Am1h-itx mainboard with an AMD 5350 CPU (onboard graphic).
I created a raid 6 but i dont think thats the problem, as the boot
process goes pretty far. I would even say its going until X should start, but it is a server install, so i guess there is no X.
Can someone tell me what could i do to get more information? Is there
some kind of nomodeset param available for the grub cmd line param which i could try?
Thanks _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Yes you can use nomodeset, are you able to boot with the diagnostic kernel which has minimum display requirement?
Earl A Ramirez wrote:
On 16 May 2016 12:13, "Oliver Zemann" oliver.zemann@gmail.com wrote:
Hi, i just installed CentOS 7.2 on my little "server" but i get a black
screen during boot. It is a Asrock Am1h-itx mainboard with an AMD 5350 CPU (onboard graphic).
I created a raid 6 but i dont think thats the problem, as the boot
process goes pretty far. I would even say its going until X should start, but it is a server install, so i guess there is no X.
Can someone tell me what could i do to get more information? Is there
some kind of nomodeset param available for the grub cmd line param which i could try?
Yes you can use nomodeset, are you able to boot with the diagnostic kernel which has minimum display requirement?
I'd also suggest several things:
1. If it's a server, why do you need X? 2. If you do, then I'd start out by having it come up in runlevel 3, *not* 5, and then as root I'd run startx, and see what error messages there are. Doing this gives you a much more controlled environment in which to debug the X issues. 3. One final thought: what do you get when you do yum grouplist - what X or Desktop groups are installed?
mark
X is not installed. I removed rhgb and quiet and replaced that with nomodeset, now i can boot. I am just wondering why the rescue/diagnostic mode did not help me in this case and turned black too. And i wonder what i have to do to boot without nomodeset.
Am 16.05.2016 um 16:45 schrieb m.roth@5-cent.us:
Earl A Ramirez wrote:
On 16 May 2016 12:13, "Oliver Zemann" oliver.zemann@gmail.com wrote:
Hi, i just installed CentOS 7.2 on my little "server" but i get a black
screen during boot. It is a Asrock Am1h-itx mainboard with an AMD 5350 CPU (onboard graphic).
I created a raid 6 but i dont think thats the problem, as the boot
process goes pretty far. I would even say its going until X should start, but it is a server install, so i guess there is no X.
Can someone tell me what could i do to get more information? Is there
some kind of nomodeset param available for the grub cmd line param which i could try? Yes you can use nomodeset, are you able to boot with the diagnostic kernel which has minimum display requirement?
I'd also suggest several things:
If it's a server, why do you need X?
If you do, then I'd start out by having it come up in runlevel 3, *not* 5, and then as root I'd run startx, and see what error messages there are. Doing this gives you a much more controlled environment in which to debug the X issues.
One final thought: what do you get when you do yum grouplist - what X or Desktop groups are installed?
mark
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Using nomodeset worked. Diagnostic kernel did not work. Any idea what i have to do to boot without using nomodeset?
Am 16.05.2016 um 15:36 schrieb Earl A Ramirez:
On 16 May 2016 12:13, "Oliver Zemann" oliver.zemann@gmail.com wrote:
Hi, i just installed CentOS 7.2 on my little "server" but i get a black
screen during boot. It is a Asrock Am1h-itx mainboard with an AMD 5350 CPU (onboard graphic).
I created a raid 6 but i dont think thats the problem, as the boot
process goes pretty far. I would even say its going until X should start, but it is a server install, so i guess there is no X.
Can someone tell me what could i do to get more information? Is there
some kind of nomodeset param available for the grub cmd line param which i could try?
Thanks _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Yes you can use nomodeset, are you able to boot with the diagnostic kernel which has minimum display requirement? _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
On 05/16/2016 10:51 AM, Oliver Zemann wrote:
Using nomodeset worked. Diagnostic kernel did not work. Any idea what i have to do to boot without using nomodeset?
Does the system not boot, or do you simply not get a VGA console? If it's the latter, you should be able to log in and check the system via SSH.
I'd guess that the system is selecting a mode that the monitor attached doesn't support. If that's the case, then your options are to use "nomodeset" or to specify a generic VGA mode that you prefer.
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Earl A Ramirez -
Gordon Messmer -
m.roth＠5-cent.us -
Oliver Zemann