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
If you are booting sucessfully yet can't get into grub and have no backup kernel you have serious problems. I agree a new install is in order. I would back up my user directory/files and do a low level format of the disk.
BTW, did you see any kernels in your /boot directory?
Cheers,
Sent: Tuesday, April 23, 2019 at 5:34 PM
From: "Brian O'Keefe" <okeefe@cybermesa.com>
To: nmglug@lists.nmglug.org
Subject: [nmglug] gsmartcontrol Weirdness
From: "Brian O'Keefe" <okeefe@cybermesa.com>
To: nmglug@lists.nmglug.org
Subject: [nmglug] gsmartcontrol Weirdness
Sorry AGAIN for the stream of emails. Output of gsmartcontro extended test:
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.0-47-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: WDC WDS100T2B0A-00SM50
Serial Number: 181228800969
LU WWN Device Id: 5 001b44 8b6aebe6a
Firmware Version: X61130WD
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: Unknown(0x0ff0), ACS-4 T13/BSR INCITS 529 revision 5
SATA Version is: SATA >3.2 (0x1ff), 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Tue Apr 23 16:13:00 2019 MDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is: Unavailable
APM level is: 254 (maximum performance)
Rd look-ahead is: Enabled
Write cache is: Enabled
ATA Security is: Disabled, NOT FROZEN [SEC1]
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 0) seconds.
Offline data collection
capabilities: (0x11) SMART execute Offline immediate.
No Auto Offline data collection support.
Suspend Offline collection upon new
command.
No Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
No Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 10) minutes.
SMART Attributes Data Structure revision number: 4
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
5 Reallocated_Sector_Ct -O--CK 100 100 --- - 0
9 Power_On_Hours -O--CK 100 100 --- - 2694
12 Power_Cycle_Count -O--CK 100 100 --- - 2430
165 Unknown_Attribute -O--CK 100 100 --- - 34380513503
166 Unknown_Attribute -O--CK 100 100 --- - 1
167 Unknown_Attribute -O--CK 100 100 --- - 33
168 Unknown_Attribute -O--CK 100 100 --- - 21
169 Unknown_Attribute -O--CK 100 100 --- - 564
170 Unknown_Attribute -O--CK 100 100 --- - 0
171 Unknown_Attribute -O--CK 100 100 --- - 0
172 Unknown_Attribute -O--CK 100 100 --- - 0
173 Unknown_Attribute -O--CK 100 100 --- - 3
174 Unknown_Attribute -O--CK 100 100 --- - 1698
184 End-to-End_Error -O--CK 100 100 --- - 0
187 Reported_Uncorrect -O--CK 100 100 --- - 0
188 Command_Timeout -O--CK 100 100 --- - 14
194 Temperature_Celsius -O---K 064 048 --- - 36 (Min/Max 9/48)
199 UDMA_CRC_Error_Count -O--CK 100 100 --- - 0
230 Unknown_SSD_Attribute -O--CK 100 100 --- - 188980527148
232 Available_Reservd_Space PO--CK 100 100 004 - 100
233 Media_Wearout_Indicator -O--CK 100 100 --- - 3598
234 Unknown_Attribute -O--CK 100 100 --- - 5422
241 Total_LBAs_Written ----CK 253 253 --- - 4262
242 Total_LBAs_Read ----CK 253 253 --- - 7820
244 Unknown_Attribute -O--CK 000 100 --- - 0
||||||_ K auto-keep
|||||__ C event count
||||___ R error rate
|||____ S speed/performance
||_____ O updated online
|______ P prefailure warning
General Purpose Log Directory Version 1
SMART Log Directory Version 1 [multi-sector log support]
Address Access R/W Size Description
0x00 GPL,SL R/O 1 Log Directory
0x01 SL R/O 1 Summary SMART error log
0x02 SL R/O 2 Comprehensive SMART error log
0x03 GPL R/O 1 Ext. Comprehensive SMART error log
0x04 GPL,SL R/O 8 Device Statistics log
0x06 SL R/O 1 SMART self-test log
0x07 GPL R/O 1 Extended self-test log
0x10 GPL R/O 1 SATA NCQ Queued Error log
0x11 GPL R/O 1 SATA Phy Event Counters log
0x30 GPL,SL R/O 9 IDENTIFY DEVICE data log
0x80-0x9f GPL,SL R/W 16 Host vendor specific log
0xde GPL VS 8 Device vendor specific log
SMART Extended Comprehensive Error Log Version: 1 (1 sectors)
No Errors Logged
SMART Extended Self-test Log Version: 1 (1 sectors)
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 2694 -
# 2 Short offline Completed without error 00% 2693 -
Selective Self-tests/Logging not supported
SCT Commands not supported
Device Statistics (GP Log 0x04)
Page Offset Size Value Flags Description
0x01 ===== = = === == General Statistics (rev 1) ==
0x01 0x008 4 2430 --- Lifetime Power-On Resets
0x01 0x010 4 0 --- Power-on Hours
0x01 0x018 6 8939654830 --- Logical Sectors Written
0x01 0x020 6 440746242 --- Number of Write Commands
0x01 0x028 6 16400872050 --- Logical Sectors Read
0x01 0x030 6 1053092276 --- Number of Read Commands
0x07 ===== = = === == Solid State Device Statistics (rev 1) ==
0x07 0x008 1 0 N-- Percentage Used Endurance Indicator
|||_ C monitored condition met
||__ D supports DSN
|___ N normalized value
SATA Phy Event Counters (GP Log 0x11)
ID Size Value Description
0x0001 4 0 Command failed due to ICRC error
0x0002 4 0 R_ERR response for data FIS
0x0005 4 0 R_ERR response for non-data FIS
0x000a 4 3 Device-to-host register FISes sent due to a COMRESET
On 4/23/19 10:15 AM, Alucard wrote:
Hi Brian,
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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