If you have a few Kernels in your system you can set manually what Kernel version will start:
-
Reboot your PC with pressed Shift button for display GRUB after BIOS will start. You will see something like: GRUB start page
My 2¢.
If my OS was that hosed, I would just start over. There is a point where the rabbit hole gets too deep to climb out of.
Have you looked at the hard drive to see if that HDD/SSD is failing?
sudo apt install smartmontools
sudo smartctl --all /dev/sda
If you have never looked at SMART data, then you will want to probably send us/me the output. You will probably be better off doing this from a live USB/CD. If you want a GUI for smartmontools, look at GSmartControl.
If the drive is failing, then fixing the OS is a moot point.
Regards,
Jared
On 4/22/19 9:45 PM, Brian O'Keefe
wrote:
Thanks Harold. Responses inserted for ease and clarity. Many thanks again
On 4/22/19 9:23 PM, Harold Furbiter wrote:
I have booted into older kernels or safe mode this way in the pas. Now I cannot reboot as all that comes up is the them color screen, no login, nothing. So I have to do a hard shutdown. I do not get a Grub menu holding down shift key upon starting. I get a flat theme color screen. Nothing moreHere is a receipe for boot from an older kernel, and how to set it to a default.
Since I can't access Grub menu I can't do any of the following except edit grub setup file, which I have not done because of above issue
Select "Advanced options for Ubuntu" and memorize index of this menu line(count starts from 0) On the picture index is 1
Select concrete kernel for boot and also memorize index of this menu line(count starts from 0) On the picture index of chosen Kernel is 2
Start system. This action is for one boot on concrete kernel. If you want to start from concrete Kernel all time you should do next steps:
4.1. Open and edit GRUB setup file:
sudo nano /etc/default/grub4.2. Find line GRUB_DEFAULT=...(by default GRUB_DEFAULT=0) and sets in quotes menu path to concrete Kernel(Remember menu indexes from steps 2 and 3). In my system first index was 1 and second was 2. I set in to GRUB_DEFAULT
GRUB_DEFAULT="1>2"Save file.
4.3. Update GRUB information for apply changes:
sudo update-grub4.4. After reboot you automatically boot on Kernel by chosen menu path. An example on my machine 1 -> 2
4.5. Check Kernel version after reboot:
uname -r
Sent: Thursday, April 18, 2019 at 10:54 PM
From: "Brian O'Keefe" <okeefe@cybermesa.com>
To: nmglug@lists.nmglug.org
Subject: Re: [nmglug] WeirdnessThanks again,
Tried them all to no avail
On 4/15/19 6:33 PM, Harold Furbiter wrote:reboots to a blank, colored screen, no log inYou could try:sudo /sbin/init 6 (see if it reboots)Gives me a rescue mode prompt that I cannot use as I can't enter any of the optionssudo /sbin/init 1 (see if it give you a prompt)Can't access the grub menu for older kernels. Using shift key during boot just gives me the blank colored screenmaybe su to root and try initsudo su - root (you need '- root' to insure your path is root's)you might try booting from a older or oldest kernel:Is there a way to reboot from a terminal with an older kernel as I cannot access the grub menu. this is a recent issue, within the last couple of weeks.dpkg -l | grep linux-image | awk '{print$2}'Gives you a list of bootable kernels available on your system. Try booting from the oldest version.Cheers,Sent: Saturday, April 13, 2019 at 8:32 AM
From: "Harold Furbiter" <wwcorigan@mail.com>
To: nmglug@lists.nmglug.org
Subject: Re: [nmglug] Weirdness_______________________________________________ nmglug mailing list nmglug@lists.nmglug.org http://lists.nmglug.org/listinfo.cgi/nmglug-nmglug.orgThen you have a corrupt kernel. On boot try booting to an older kernel.Sent: Friday, April 12, 2019 at 6:15 PM
From: "Brian O'Keefe" <okeefe@cybermesa.com>
To: nmglug@lists.nmglug.org
Subject: Re: [nmglug] WeirdnessThanks for the input Harold,
Same result, just hangs on the splash screen. Can't logout, esc. key does nothing, can't switch to a console. Just have to do a hard shutdown.
On 4/11/19 8:59 PM, Harold Furbiter wrote:Out of curiousity have you tried init 0 ?Sent: Wednesday, April 10, 2019 at 11:26 AM
From: "Brian O'Keefe" <okeefe@cybermesa.com>
To: "NMGLUG.org mailing list" <nmglug@nmglug.org>
Subject: [nmglug] WeirdnessHi All,
Since I may not make meeting (niece visiting and Thurs. is her last day) I'm putting my issue out for comment and hopefully answers. As many of you know I used to updgrade instead of clean installs and did that since Ubuntu 6.04. I had also added many apps from third parties and also modified many, many conf files to keep things working. I had a meltdown and lost much of my data but following a partial recovery, thanks to a certain group member, I installed a clean version of 18.04 onto a new 1TB SSD. I have ot tinkered at all with 3rd party software nor modified any conf files or been a bad boy in any way!
My issue ids that I cannot shut down my box in anyway other than a hard shutdown. I also cannot restart it. I have tried the GUI option as well as switching to text mode and using "sudo shutdown now" or "sudo restart now". In those cases I get the splash screen with the "traveling lights" and Unutu but it hangs there. The traveling dots hang on the first dot of the splash screen and nothing happens. I had hoped that text mode would give give me an indication of the issues but I can't stay in that mode for some reason.
Thanks for any help.
Brian
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