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DATE 2018-09-01

HANGOUT

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MESSAGE
DATE 2018-09-02
FROM James Keenan
SUBJECT Re: [Hangout - NYLXS] Need Linux expert to help solve failed Ubuntu
On Sat, Sep 1, 2018, at 3:38 PM, James Keenan wrote:
> I need assistance from a Linux expert, preferably one in New York City.
> Today I attempted to upgrade from Ubuntu Linux 16.04 LTS to 18.04 LTS.
> The upgrade failed leaving me only with a crippled 16.04 system on which
> I cannot get past the login page.
>
> On the machine in question I successfully upgraded from 14.04 LTS to
> 16.04 about two years ago. ISTR that I used the Ubuntu Software Updater
> (GUI) program and all went smoothly. So, having done a backup of my
> homedir, I today first attempted to use the Software Updater to move to
> 18.04. (That program had been prompting me to upgrade for the past two
> weeks or so.) I spent several hours working on one problem and, via a
> post on askubuntu.com, got past that. At the command line I called the
> apt command to do a dist version upgrade and I observed the program
> downloading, unpacking and installing packages as expected.
>
> After about twenty minutes I came back to the keyboard and that the
> command had completed with messages like the following:
>
> "The dist upgrade has completed, but there were problems with these file:
> [list of about 15 packages]
>
> "Dist upgrade has been completed."
>
> (I'm sorry I can't quote the exact message. I copied it to a plain-text
> file but, as you shall soon see, have no access to that file.)
>
> The program's output did not specify any what of addressing the problems
> with packages. On the basis of past experience I figured that after a
> restart I could address those problems one at a time.
>
> So I rebooted -- and here my troubles began.
>
> When the computer came back up, it came up into Ubuntu 16.04 LTS -- not
> 18.04. So the upgrade had not really completed. Worse, once I entered
> my password I never got anywhere past the login page, i.e., I never got
> to my Desktop. The login page looks slightly different in that next to
> my username there is a "footprint in a circle" item which, if I click on
> it, offers me a choice between "GNOME on Xorg" with a circle but no
> footprint and "GNOME on Xorg" with a circle and the footprint therein.
> I don't recall seeing either of these on the real 16.04 LTS login page.
> But regardless of which I choose, after entering my password and hitting
> enter, I get taken back to the login page.
>
> So what happens if I try a restart (I do have mouse and keyboard input)?
> The computer comes back up to the 16.04 login screen, albeit with the
> "circle with no footprint in it" variant.
>
> I also tried holding down the Ctrl key while restarting. Earlier in my
> debugging that would bring me to a pop-up stating that I was now running
> in low-resolution graphics mode and offering me several options.
> Unfortunately, I cannot reproduce that now.
>
> So what I fear happened was that the attempted upgrade removed packages
> that were fundamental to the operation of 16.04 LTS -- I recall that one
> of the problematic packages was 'nautilus' -- without installing
> everything I needed for 18.04. I have no Desktop, terminal, browser --
> nothing on the affected machine.
>
> I suspect that this is the sort of problem where I'll have to bring the
> computer to a knowledgeable person and work side-by-side with her/him to
> salvage this situation. The only other computer I have is a 14-year-old
> Mac whose browsers are so old that I can't use them to login to
> askubuntu.com.
>
> So if anyone can help me out, the help would be greatly appreciated and
> I'd ask that you mail me off-list with suggestions, time/place to meet
> up, etc.
>
> Thank you very much.
> Jim Keenan
>
Thanks for the replies that I have received so far, both on-list and off-list.

Two off-list suggestions were particularly valuable. One reminded me that to boot in single-user mode I have to hold down the Shift key while restarting rather than the Ctrl key. That got me to the GNU GRUB menu, with which I was previously familiar. I selected Advanced Options for Ubuntu and then selected Recovery mode and was able to explore the system thereby.

The second suggestion was, to hit Ctrl+Alt+F1 when I got to the login/password prompt. This drops me out of the GUI and gave me a terminal with which to explore the system.

I spent about 6 hours trying various things last night. At one point, much to my surprise, I had wireless internet access. That enabled me to try various combinations of the Ubuntu Software Update and 'sudo apt-get -f install' and 'sudo do-release-upgrade'. I eventually got to a point where, though the login page still said "Ubuntu 16.04 LTS", the environment into which I was transferred once I logged in was clearly 18.04. Some more rebooting got me to a point where the login page now says "Ubuntu 18.04 LTS."

My most severe current problem is: No internet access.

Upon rebooting the wireless router is detected and the signal is satisfactory. But there is no connection. 'ping 1.1.1.1' returns expected results, but ...

#####
$ ping google.com
ping: google.com: Name or service not known
#####

I get similar results from 'ssh', 'sftp', etc.

In the past, one simple fix which worked in this situation was:

#####
$ sudo dhclient -v eth0
#####

(I think I even have a comment/post about this somewhere on askubuntu.com -- but my browsers are too old to be able to search that site.)

But now the only thing I'm getting with that command is:

#####
Listening on LPF/eth0/44:81:5b:40:b4:7e
Sending on LPF/eth0/44:81:5b:40:b4:7e
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255. port 67 interval 3 (xid=0xbc75620)
[last line repeated indefinitely with different values for 'interval']
#####

I'm inlining (because Attach File does not seem to work on this ancient browser) 3 plain-text files in the hope of getting further insights from readers of this list:

* The content of /etc/network/interfaces
* The output of ifconfig
* The output of lspci

#####
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
#####
docker0: flags=4099 mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:2a:74:df:fe txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eth0: flags=4099 mtu 1500
ether 44:8a:5b:40:b4:7e txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 19

lo: flags=73 mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1 (Local Loopback)
RX packets 2636 bytes 258035 (258.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2636 bytes 258035 (258.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlan0: flags=4163 mtu 1500
inet 192.168.1.5 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::4459:1af7:aebd:af70 prefixlen 64 scopeid 0x20
ether 68:17:29:65:81:b9 txqueuelen 1000 (Ethernet)
RX packets 242 bytes 72055 (72.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 93 bytes 13583 (13.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

#####
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d5)
00:1c.5 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #6 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
03:00.0 Ethernet controller: Qualcomm Atheros AR8161 Gigabit Ethernet (rev 10)
04:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)
#####

Thank you very much.

--
James Keenan
jkeenan-at-pobox.com

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  1. 2018-09-02 James Keenan <jkeenan-at-pobox.com> Re: [Hangout - NYLXS] Need Linux expert to help solve failed Ubuntu
  2. 2018-09-02 Yitzchak Scott-Thoennes <sthoenna-at-efn.org> Re: [Hangout - NYLXS] Need Linux expert to help solve failed Ubuntu
  3. 2018-09-01 James Keenan <jkeenan-at-pobox.com> Subject: [Hangout - NYLXS] Need Linux expert to help solve failed Ubuntu
  4. 2018-09-02 Gabor Szabo <gabor-at-szabgab.com> Subject: [Hangout - NYLXS] [Perlweekly] #371 - The school year has started
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  6. 2018-09-04 James E Keenan <jkeenan-at-pobox.com> Subject: [Hangout - NYLXS] Sept 25 social meeting at d.b.a.
  7. 2018-09-05 Ruben Safir <mrbrklyn-at-panix.com> Subject: [Hangout - NYLXS] Fwd: Introduction to Python for deep-learning --
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  28. 2018-09-26 Ruben Safir <ruben-at-mrbrklyn.com> Subject: [Hangout - NYLXS] Insane Story .... great laugh
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