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Old 05-04-2017, 04:02 AM   #1
Laki
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CentOS 6.7 black screen with white coursor


Hi all,
I have problem witn centOS and nouviau drivers, i was able to use ssh to access centos but not to login to Desktop. So i was trying to disable from this link http://www.tecmint.com/install-nvidia-drivers-in-linux/, but aftere step
# dracut -v /boot/initramfs-$(uname -r).img $(uname -r) I reboot PC and now i got black screen witn white coursor. I can reboot with shift and got grub list, but how to fix this?

Thanks
 
Old 05-04-2017, 10:07 AM   #2
r3sistance
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To get back to commandline you might just be able to hit ctrl+alt+<number> to switch to a CLI (if I remember my keyboard shortcuts correctly), but if that doesn't work.

on grub, hit e to edit the default boot option, go to the "kernel" line and hit e to edit again. Add a 1 to the end of the line and hit return, hit b to boot. This will initialize centos into run level 1, which has no GUI. Alternatively instead of 1 you could do "init=/bin/bash" which would initialize centos into a bash terminal, both are pretty similar. Instead of 1, 3 may work for a full multi-user boot but it isn't guaranteed.

Last edited by r3sistance; 05-04-2017 at 10:10 AM.
 
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Old 05-04-2017, 11:45 AM   #3
jamison20000e
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"ctrl+alt+<number>" <number> should be F1 to 7
 
Old 05-04-2017, 12:57 PM   #4
Laki
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Thanks,
I found this solution,
If first step is not done , we can enter edit-mode in grub and choose the old initrd by below steps .

a. If grub is secured with a password, press p and enter the password

b. Use the arrow keys to highlight the entry for the kernel you wish to boot

c. Press e for edit

d. Highlight the initrd line and press e again

e. Change the path for the initrd to the backup copy you made (such as /initrd-2.6.18-274.el5.img.bak)

f. Press Enter to temporarily save the changes you have made

g. Press b for boot

Note: This procedure did not actually make any persistent change. The next boot will continue to use the original grub.conf configuration unless it is updated.

from http://advancelinux.blogspot.rs/2013...tramfs-in.html,

But how to make permanent, because when i reboot it show black screen again.

Thanks
 
Old 05-04-2017, 11:58 PM   #5
ondoho
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^ good, you managed to get into command line mode.
you will need that to fix your problem.

now here's the thing i don't understand:
if you ssh into the machine, i assume it's a remote server? something like that?
so why do you need to install the proprietary nvidia driver on that?
or are you doing something else?

more information about the setup, please.
in your own words.

additionally, the output of this:
Code:
lspci -k | grep -iEA5 'vga|3d|display'
thank you.
 
Old 05-05-2017, 02:40 AM   #6
Laki
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Hi,
I use ssh because monitor for Centos is dead, i know is better to use ssh then to have gui, but im new in Linux world and coming from MS Windows.(bad habit to have gui and just click here or there).
Any way, when I enter your command this is output :

~]$ lspci -k | grep -iEA5 'vga|3d|display'
01:00.0 VGA compatible controller: NVIDIA Corporation G86 [GeForce 8400 GS] (rev a1)
Subsystem: XFX Pine Group Inc. Device 2310
Kernel driver in use: nouveau
Kernel modules: nouveau, nvidiafb
03:00.0 SATA controller: JMicron Technology Corp. JMB363 SATA/IDE Controller (rev 02)
Subsystem: Gigabyte Technology Co., Ltd Motherboard

I got drivers from NVidia, but as i say at the moment i can access to Centos only when I reboot machine, hold shift button, select Centos with highest kernel version (2.6.32-696.1.1.e16) then press 'e', select
'initrd /initframfs-2.6.32-696.1.1.e16.x86_64.img' press 'e' and change from 'grub edit> initrd /initframfs-2.6.32-696.1.1.e16.x86_64.img' to 'initrd /initframfs-2.6.32-696.1.1.e16.x86_64.img.bak' press enter and 'b' to boot. After that I can log from ssh or from GUI, but if i reboot Centos, after bootup just show a black screen and blinking cursor, and when is in that state i cant connect from shh or ping a machine.
How to replace faulty 'initrd /initframfs-2.6.32-696.1.1.e16.x86_64.img' whit 'initrd /initframfs-2.6.32-696.1.1.e16.x86_64.img.bak'? and can I after install nvidia drivers or i need to go from start to first disable again nouveau drivers from this link http://www.tecmint.com/install-nvidia-drivers-in-linux/
or is some better solution?

Thanks
 
Old 05-05-2017, 10:24 AM   #7
ondoho
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Quote:
Originally Posted by Laki View Post
How to replace faulty 'initrd /initframfs-2.6.32-696.1.1.e16.x86_64.img' whit 'initrd /initframfs-2.6.32-696.1.1.e16.x86_64.img.bak'?
Code:
mv /initframfs-2.6.32-696.1.1.e16.x86_64.img.bak /initframfs-2.6.32-696.1.1.e16.x86_64.img
but i suspect that something else is amiss here.
looking at the tecmint article, i have my doubts... it's from 2013...
why didn't you follow the instructions on centos wiki?
which centos version do you use? is it up to date?
did you run 'update-grub'?
 
  


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