In July, my dual-boot Linux computer developed the well-known login loop issue, without any hardware changes and with only the normal routine software update activities on the Ubuntu and Windows-10 sides. I have run the nvidia-bug-report.log.sh. I will try to attach the resulting .gz file. The only anomaly I could spot in the .log file was failure to manage some links in the uninstall phase of the driver installation. The login loop was the same if I used the PPA-provided drivers (I tested all available versions) and using the NVIDIA-provided installer.nvidia-bug-report.log.gz (1.0 MB)
Some further observations: It seems that the problem component is gstreamer1.0. After an unsuccessful login attempt, there are some files in the /var/crash directory: one .crash file containing data and some upload files having zero length. The .crash file:
ProblemType: Crash
Architecture: amd64
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 8 17:09:01 2020
DistroRelease: Ubuntu 18.04
ExecutablePath: /usr/lib/x86_64-linux-gnu/gstreamer1.0/gstreamer-1.0/gst-plugin-scanner
ExecutableTimestamp: 1562164487
ProcCmdline: /usr/lib/x86_64-linux-gnu/gstreamer1.0/gstreamer-1.0/gst-plugin-scanner -l /usr/lib/tracker/tracker-extract
ProcCwd: /home/yrjo
ProcEnviron:
LANGUAGE=en_US
LC_TIME=fi_FI.UTF-8
LC_MONETARY=fi_FI.UTF-8
PATH=(custom, user)
LC_ADDRESS=fi_FI.UTF-8
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
LC_TELEPHONE=fi_FI.UTF-8
LC_NAME=fi_FI.UTF-8
SHELL=/bin/bash
LC_MEASUREMENT=fi_FI.UTF-8
LC_IDENTIFICATION=fi_FI.UTF-8
LC_NUMERIC=fi_FI.UTF-8
LC_PAPER=fi_FI.UTF-8
ProcMaps:
55eada39a000-55eada39b000 r-xp 00000000 08:12 8394515 /usr/lib/x86_64-linux-gnu/gstreamer1.0/gstreamer-1.0/gst-plugin-scanner
55eada59a000-55eada59b000 r--p 00000000 08:12 8394515 /usr/lib/x86_64-linux-gnu/gstreamer1.0/gstreamer-1.0/gst-plugin-scanner
55eada59b000-55eada59c000 rw-p 00001000 08:12 8394515 /usr/lib/x86_64-linux-gnu/gstreamer1.0/gstreamer-1.0/gst-plugin-scanner
55eadba86000-55eadbbb3000 rw-p 00000000 00:00 0 [heap]
7f3767a27000-7f3767a2d000 r-xp 00000000 08:12 12583184 /lib/x86_64-linux-gnu/libuuid.so.1.3.0
7f3767a2d000-7f3767c2c000 ---p 00006000 08:12 12583184 /lib/x86_64-linux-gnu/libuuid.so.1.3.0
7f3767c2c000-7f3767c2d000 r--p 00005000 08:12 12583184 /lib/x86_64-linux-gnu/libuuid.so.1.3.0
7f3767c2d000-7f3767c2e000 rw-p 00006000 08:12 12583184 /lib/x86_64-linux-gnu/libuuid.so.1.3.0
7f3769e20000-7f3769e67000 r-xp 00000000 08:12 12583126 /lib/x86_64-linux-gnu/libblkid.so.1.1.0
7f3769e67000-7f376a067000 ---p 00047000 08:12 12583126 /lib/x86_64-linux-gnu/libblkid.so.1.1.0
7f376a067000-7f376a06b000 r--p 00047000 08:12 12583126 /lib/x86_64-linux-gnu/libblkid.so.1.1.0
7f376a06b000-7f376a06c000 rw-p 0004b000 08:12 12583126 /lib/x86_64-linux-gnu/libblkid.so.1.1.0
7f376a06c000-7f376a06d000 rw-p 00000000 00:00 0
7f376af08000-7f376af59000 r-xp 00000000 08:12 12583226 /lib/x86_64-linux-gnu/libmount.so.1.1.0
7f376af59000-7f376b158000 ---p 00051000 08:12 12583226 /lib/x86_64-linux-gnu/libmount.so.1.1.0
7f376b158000-7f376b15b000 rw-p 00050000 08:12 12583226 /lib/x86_64-linux-gnu/libmount.so.1.1.0
7f376b15b000-7f376b15c000 rw-p 00000000 00:00 0
7f376b15c000-7f376b173000 r-xp 00000000 08:12 12583207 /lib/x86_64-linux-gnu/libresolv-2.27.so
7f376b173000-7f376b373000 ---p 00017000 08:12 12583207 /lib/x86_64-linux-gnu/libresolv-2.27.so
7f376b373000-7f376b375000 rw-p 00017000 08:12 12583207 /lib/x86_64-linux-gnu/libresolv-2.27.so
7f376b375000-7f376b377000 rw-p 00000000 00:00 0
7f376b377000-7f376b39c000 r-xp 00000000 08:12 12583259 /lib/x86_64-linux-gnu/libselinux.so.1
7f376b39c000-7f376b59b000 ---p 00025000 08:12 12583259 /lib/x86_64-linux-gnu/libselinux.so.1
7f376b59b000-7f376b59d000 rw-p 00024000 08:12 12583259 /lib/x86_64-linux-gnu/libselinux.so.1
7f376b59d000-7f376b59f000 rw-p 00000000 00:00 0
7f376d807000-7f376d99c000 r-xp 00000000 08:12 7996487 /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.5600.4
7f376d99c000-7f376db9c000 ---p 00195000 08:12 7996487 /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.5600.4
7f376db9c000-7f376dba4000 rw-p 00195000 08:12 7996487 /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.5600.4
7f376dba4000-7f376dba6000 rw-p 00000000 00:00 0
7f37738c9000-7f37738ee000 r-xp 00000000 08:12 8265279 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstmultifile.so
7f37738ee000-7f3773aed000 ---p 00025000 08:12 8265279 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstmultifile.so
7f3773aed000-7f3773aee000 r--p 00024000 08:12 8265279 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstmultifile.so
7f3773aee000-7f3773aef000 rw-p 00025000 08:12 8265279 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstmultifile.so
7f3773aef000-7f3773b0b000 r-xp 00000000 08:12 12582996 /lib/x86_64-linux-gnu/libz.so.1.2.11
7f3773b0b000-7f3773d0a000 ---p 0001c000 08:12 12582996 /lib/x86_64-linux-gnu/libz.so.1.2.11
7f3773d0a000-7f3773d0b000 r--p 0001b000 08:12 12582996 /lib/x86_64-linux-gnu/libz.so.1.2.11
7f3773d0b000-7f3773d0c000 rw-p 0001c000 08:12 12582996 /lib/x86_64-linux-gnu/libz.so.1.2.11
7f3773d0c000-7f3773d23000 r-xp 00000000 08:12 12583110 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f3773d23000-7f3773f22000 ---p 00017000 08:12 12583110 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f3773f22000-7f3773f23000 r--p 00016000 08:12 12583110 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f3773f23000-7f3773f24000 rw-p 00017000 08:12 12583110 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f3773f24000-7f377409d000 r-xp 00000000 08:12 7995951 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25
7f377409d000-7f377429d000 ---p 00179000 08:12 7995951 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25
7f377429d000-7f37742a7000 r--p 00179000 08:12 7995951 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25
7f37742a7000-7f37742a9000 rw-p 00183000 08:12 7995951 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25
7f37742a9000-7f37742ad000 rw-p 00000000 00:00 0
7f377443d000-7f3774463000 r-xp 00000000 08:12 7998445 /usr/lib/x86_64-linux-gnu/libgstmpegts-1.0.so.0.1405.0
7f3774463000-7f3774662000 ---p 00026000 08:12 7998445 /usr/lib/x86_64-linux-gnu/libgstmpegts-1.0.so.0.1405.0
7f3774662000-7f3774666000 r--p 00025000 08:12 7998445 /usr/lib/x86_64-linux-gnu/libgstmpegts-1.0.so.0.1405.0
7f3774666000-7f3774667000 rw-p 00029000 08:12 7998445 /usr/lib/x86_64-linux-gnu/libgstmpegts-1.0.so.0.1405.0
7f3774667000-7f3774668000 rw-p 00000000 00:00 0
7f3774668000-7f3774685000 r-xp 00000000 08:12 8268586 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstdvb.so
7f3774685000-7f3774885000 ---p 0001d000 08:12 8268586 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstdvb.so
7f3774885000-7f3774886000 r--p 0001d000 08:12 8268586 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstdvb.so
7f3774886000-7f3774887000 rw-p 0001e000 08:12 8268586 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstdvb.so
7f3774887000-7f37748a4000 r-xp 00000000 08:12 12583375 /lib/x86_64-linux-gnu/libudev.so.1.6.9
7f37748a4000-7f3774aa3000 ---p 0001d000 08:12 12583375 /lib/x86_64-linux-gnu/libudev.so.1.6.9
7f3774aa3000-7f3774aa4000 r--p 0001c000 08:12 12583375 /lib/x86_64-linux-gnu/libudev.so.1.6.9
7f3774aa4000-7f3774aa5000 rw-p 0001d000 08:12 12583375 /lib/x86_64-linux-gnu/libudev.so.1.6.9
7f3774aa5000-7f3774aab000 r-xp 00000000 08:12 7996076 /usr/lib/x86_64-linux-gnu/libgstbasecamerabinsrc-1.0.so.0.1405.0
7f3774aab000-7f3774caa000 ---p 00006000 08:12 7996076 /usr/lib/x86_64-linux-gnu/libgstbasecamerabinsrc-1.0.so.0.1405.0
7f3774caa000-7f3774cab000 r--p 00005000 08:12 7996076 /usr/lib/x86_64-linux-gnu/libgstbasecamerabinsrc-1.0.so.0.1405.0
7f3774cab000-7f3774cac000 rw-p 00006000 08:12 7996076 /usr/lib/x86_64-linux-gnu/libgstbasecamerabinsrc-1.0.so.0.1405.0
7f3774cac000-7f3774cc3000 r-xp 00000000 08:12 12583008 /lib/x86_64-linux-gnu/libusb-1.0.so.0.1.0
7f3774cc3000-7f3774ec2000 ---p 00017000 08:12 12583008 /lib/x86_64-linux-gnu/libusb-1.0.so.0.1.0
7f3774ec2000-7f3774ec3000 r--p 00016000 08:12 12583008 /lib/x86_64-linux-gnu/libusb-1.0.so.0.1.0
7f3774ec3000-7f3774ec4000 rw-p 00017000 08:12 12583008 /lib/x86_64-linux-gnu/libusb-1.0.so.0.1.0
7f3774ec4000-7f3774ecd000 r-xp 00000000 08:12 7996143 /usr/lib/x86_64-linux-gnu/libgudev-1.0.so.0.2.0
7f3774ecd000-7f37750cc000 ---p 00009000 08:12 7996143 /usr/lib/x86_64-linux-gnu/libgudev-1.0.so.0.2.0
7f37750cc000-7f37750cd000 r--p 00008000 08:12 7996143 /usr/lib/x86_64-linux-gnu/libgudev-1.0.so.0.2.0
7f37750cd000-7f37750ce000 rw-p 00009000 08:12 7996143 /usr/lib/x86_64-linux-gnu/libgudev-1.0.so.0.2.0
7f37750ce000-7f37750e1000 r-xp 00000000 08:12 8268661 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstuvch264.so
7f37750e1000-7f37752e0000 ---p 00013000 08:12 8268661 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstuvch264.so
7f37752e0000-7f37752e1000 r--p 00012000 08:12 8268661 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstuvch264.so
7f37752e1000-7f37752e2000 rw-p 00013000 08:12 8268661 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstuvch264.so
7f37752e2000-7f3775359000 r-xp 00000000 08:12 8003605 /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0.28.0
7f3775359000-7f3775558000 ---p 00077000 08:12 8003605 /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0.28.0
7f3775558000-7f377555a000 r--p 00076000 08:12 8003605 /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0.28.0
7f377555a000-7f377555e000 rw-p 00078000 08:12 8003605 /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0.28.0
7f377555e000-7f3775594000 r-xp 00000000 08:12 7998075 /usr/lib/x86_64-linux-gnu/libgstpbutils-1.0.so.0.1405.0
7f3775594000-7f3775793000 ---p 00036000 08:12 7998075 /usr/lib/x86_64-linux-gnu/libgstpbutils-1.0.so.0.1405.0
7f3775793000-7f3775795000 r--p 00035000 08:12 7998075 /usr/lib/x86_64-linux-gnu/libgstpbutils-1.0.so.0.1405.0
7f3775795000-7f3775796000 rw-p 00037000 08:12 7998075 /usr/lib/x86_64-linux-gnu/libgstpbutils-1.0.so.0.1405.0
7f3775796000-7f37757b2000 r-xp 00000000 08:12 7998119 /usr/lib/x86_64-linux-gnu/libgstrtp-1.0.so.0.1405.0
7f37757b2000-7f37759b2000 ---p 0001c000 08:12 7998119 /usr/lib/x86_64-linux-gnu/libgstrtp-1.0.so.0.1405.0
7f37759b2000-7f37759b5000 r--p 0001c000 08:12 7998119 /usr/lib/x86_64-linux-gnu/libgstrtp-1.0.so.0.1405.0
7f37759b5000-7f37759b6000 rw-p 0001f000 08:12 7998119 /usr/lib/x86_64-linux-gnu/libgstrtp-1.0.so.0.1405.0
7f37759b6000-7f37759ef000 r-xp 00000000 08:12 7998165 /usr/lib/x86_64-linux-gnu/libgsttag-1.0.so.0.1405.0
7f37759ef000-7f3775bee000 ---p 00039000 08:12 7998165 /usr/lib/x86_64-linux-gnu/libgsttag-1.0.so.0.1405.0
7f3775bee000-7f3775bf0000 r--p 00038000 08:12 7998165 /usr/lib/x86_64-linux-gnu/libgsttag-1.0.so.0.1405.0
7f3775bf0000-7f3775bf1000 rw-p 0003a000 08:12 7998165 /usr/lib/x86_64-linux-gnu/libgsttag-1.0.so.0.1405.0
7f3775bf1000-7f3775c7e000 r-xp 00000000 08:12 7998172 /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0.1405.0
7f3775c7e000-7f3775e7e000 ---p 0008d000 08:12 7998172 /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0.1405.0
7f3775e7e000-7f3775e88000 r--p 0008d000 08:12 7998172 /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0.1405.0
7f3775e88000-7f3775e89000 rw-p 00097000 08:12 7998172 /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0.1405.0
7f3775e89000-7f3775e8a000 rw-p 00000000 00:00 0
7f3775e8a000-7f3775efa000 r-xp 00000000 08:12 7997795 /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0.1405.0
7f3775efa000-7f37760fa000 ---p 00070000 08:12 7997795 /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0.1405.0
7f37760fa000-7f37760fd000 r--p 00070000 08:12 7997795 /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0.1405.0
7f37760fd000-7f37760fe000 rw-p 00073000 08:12 7997795 /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0.1405.0
7f37760fe000-7f37760ff000 rw-p 00000000 00:00 0
7f37760ff000-7f3776188000 r-xp 00000000 08:12 8265286 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
7f3776188000-7f3776388000 ---p 00089000 08:12 8265286 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
7f3776388000-7f3776389000 r--p 00089000 08:12 8265286 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
7f3776389000-7f377638d000 rw-p 0008a000 08:12 8265286 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstrtp.so
7f377638d000-7f377638e000 rw-p 00000000 00:00 0
7f377638e000-7f3776401000 r-xp 00000000 08:12 8000789 /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0.1405.0
7f3776401000-7f3776601000 ---p 00073000 08:12 8000789 /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0.1405.0
7f3776601000-7f3776602000 r--p 00073000 08:12 8000789 /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0.1405.0
7f3776602000-7f3776603000 rw-p 00074000 08:12 8000789 /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0.1405.0
7f3776603000-7f3776611000 r-xp 00000000 08:12 7997667 /usr/lib/x86_64-linux-gnu/libgstapp-1.0.so.0.1405.0
7f3776611000-7f3776810000 ---p 0000e000 08:12 7997667 /usr/lib/x86_64-linux-gnu/libgstapp-1.0.so.0.1405.0
7f3776810000-7f3776811000 r--p 0000d000 08:12 7997667 /usr/lib/x86_64-linux-gnu/libgstapp-1.0.so.0.1405.0
7f3776811000-7f3776812000 rw-p 0000e000 08:12 7997667 /usr/lib/x86_64-linux-gnu/libgstapp-1.0.so.0.1405.0
7f3776812000-7f3776813000 r-xp 00000000 08:12 8258509 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstapp.so
7f3776813000-7f3776a12000 ---p 00001000 08:12 8258509 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstapp.so
7f3776a12000-7f3776a13000 r--p 00000000 08:12 8258509 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstapp.so
7f3776a13000-7f3776a14000 rw-p 00001000 08:12 8258509 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstapp.so
7f3776a14000-7f3776a1b000 r-xp 00000000 08:12 7995568 /usr/lib/x86_64-linux-gnu/libffi.so.6.0.4
7f3776a1b000-7f3776c1a000 ---p 00007000 08:12 7995568 /usr/lib/x86_64-linux-gnu/libffi.so.6.0.4
7f3776c1a000-7f3776c1b000 r--p 00006000 08:12 7995568 /usr/lib/x86_64-linux-gnu/libffi.so.6.0.4
7f3776c1b000-7f3776c1c000 rw-p 00007000 08:12 7995568 /usr/lib/x86_64-linux-gnu/libffi.so.6.0.4
7f3776c1c000-7f3776c8c000 r-xp 00000000 08:12 12583127 /lib/x86_64-linux-gnu/libpcre.so.3.13.3
7f3776c8c000-7f3776e8c000 ---p 00070000 08:12 12583127 /lib/x86_64-linux-gnu/libpcre.so.3.13.3
7f3776e8c000-7f3776e8d000 r--p 00070000 08:12 12583127 /lib/x86_64-linux-gnu/libpcre.so.3.13.3
7f3776e8d000-7f3776e8e000 rw-p 00071000 08:12 12583127 /lib/x86_64-linux-gnu/libpcre.so.3.13.3
7f3776e8e000-7f3776ea8000 r-xp 00000000 08:12 12583206 /lib/x86_64-linux-gnu/libpthread-2.27.so
7f3776ea8000-7f37770a7000 ---p 0001a000 08:12 12583206 /lib/x86_64-linux-gnu/libpthread-2.27.so
7f37770a7000-7f37770a8000 r--p 00019000 08:12 12583206 /lib/x86_64-linux-gnu/libpthread-2.27.so
7f37770a8000-7f37770a9000 rw-p 0001a000 08:12 12583206 /lib/x86_64-linux-gnu/libpthread-2.27.so
7f37770a9000-7f37770ad000 rw-p 00000000 00:00 0
7f37770ad000-7f37770b0000 r-xp 00000000 08:12 12583189 /lib/x86_64-linux-gnu/libdl-2.27.so
7f37770b0000-7f37772af000 ---p 00003000 08:12 12583189 /lib/x86_64-linux-gnu/libdl-2.27.so
7f37772af000-7f37772b0000 r--p 00002000 08:12 12583189 /lib/x86_64-linux-gnu/libdl-2.27.so
7f37772b0000-7f37772b1000 rw-p 00003000 08:12 12583189 /lib/x86_64-linux-gnu/libdl-2.27.so
7f37772b1000-7f37772b8000 r-xp 00000000 08:12 12583208 /lib/x86_64-linux-gnu/librt-2.27.so
7f37772b8000-7f37774b7000 ---p 00007000 08:12 12583208 /lib/x86_64-linux-gnu/librt-2.27.so
7f37774b7000-7f37774b8000 r--p 00006000 08:12 12583208 /lib/x86_64-linux-gnu/librt-2.27.so
7f37774b8000-7f37774b9000 rw-p 00007000 08:12 12583208 /lib/x86_64-linux-gnu/librt-2.27.so
7f37774b9000-7f3777656000 r-xp 00000000 08:12 12583190 /lib/x86_64-linux-gnu/libm-2.27.so
7f3777656000-7f3777855000 ---p 0019d000 08:12 12583190 /lib/x86_64-linux-gnu/libm-2.27.so
7f3777855000-7f3777856000 r--p 0019c000 08:12 12583190 /lib/x86_64-linux-gnu/libm-2.27.so
7f3777856000-7f3777857000 rw-p 0019d000 08:12 12583190 /lib/x86_64-linux-gnu/libm-2.27.so
7f3777857000-7f377785a000 r-xp 00000000 08:12 7996490 /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0.5600.4
7f377785a000-7f3777a59000 ---p 00003000 08:12 7996490 /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0.5600.4
7f3777a59000-7f3777a5a000 r--p 00002000 08:12 7996490 /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0.5600.4
7f3777a5a000-7f3777a5b000 rw-p 00003000 08:12 7996490 /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0.5600.4
7f3777a5b000-7f3777aad000 r-xp 00000000 08:12 7996491 /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.5600.4
7f3777aad000-7f3777cad000 ---p 00052000 08:12 7996491 /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.5600.4
7f3777cad000-7f3777cae000 r--p 00052000 08:12 7996491 /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.5600.4
7f3777cae000-7f3777caf000 rw-p 00053000 08:12 7996491 /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.5600.4
7f3777caf000-7f3777e96000 r-xp 00000000 08:12 12583134 /lib/x86_64-linux-gnu/libc-2.27.so
7f3777e96000-7f3778096000 ---p 001e7000 08:12 12583134 /lib/x86_64-linux-gnu/libc-2.27.so
7f3778096000-7f377809a000 r--p 001e7000 08:12 12583134 /lib/x86_64-linux-gnu/libc-2.27.so
7f377809a000-7f377809c000 rw-p 001eb000 08:12 12583134 /lib/x86_64-linux-gnu/libc-2.27.so
7f377809c000-7f37780a0000 rw-p 00000000 00:00 0
7f37780a0000-7f37781b4000 r-xp 00000000 08:12 7996489 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.5600.4
7f37781b4000-7f37783b4000 ---p 00114000 08:12 7996489 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.5600.4
7f37783b4000-7f37783b5000 r--p 00114000 08:12 7996489 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.5600.4
7f37783b5000-7f37783b6000 rw-p 00115000 08:12 7996489 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.5600.4
7f37783b6000-7f37783b7000 rw-p 00000000 00:00 0
7f37783b7000-7f37784e8000 r-xp 00000000 08:12 8001094 /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0.1405.0
7f37784e8000-7f37786e8000 ---p 00131000 08:12 8001094 /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0.1405.0
7f37786e8000-7f37786ee000 r--p 00131000 08:12 8001094 /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0.1405.0
7f37786ee000-7f37786f1000 rw-p 00137000 08:12 8001094 /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0.1405.0
7f37786f1000-7f37786f2000 rw-p 00000000 00:00 0
7f37786f2000-7f3778719000 r-xp 00000000 08:12 12583001 /lib/x86_64-linux-gnu/ld-2.27.so
7f37788d6000-7f37788df000 rw-p 00000000 00:00 0
7f3778919000-7f377891a000 r--p 00027000 08:12 12583001 /lib/x86_64-linux-gnu/ld-2.27.so
7f377891a000-7f377891b000 rw-p 00028000 08:12 12583001 /lib/x86_64-linux-gnu/ld-2.27.so
7f377891b000-7f377891c000 rw-p 00000000 00:00 0
7ffe84696000-7ffe846b7000 rw-p 00000000 00:00 0 [stack]
7ffe84713000-7ffe84716000 r--p 00000000 00:00 0 [vvar]
7ffe84716000-7ffe84718000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
ProcStatus:
Name: gst-plugin-scan
Umask: 0002
State: S (sleeping)
Tgid: 2230
Ngid: 0
Pid: 2230
PPid: 2126
TracerPid: 0
Uid: 1000 1000 1000 1000
Gid: 1000 1000 1000 1000
FDSize: 64
Groups: 4 24 27 30 46 113 128 1000
NStgid: 2230
NSpid: 2230
NSpgid: 1764
NSsid: 1764
VmPeak: 276240 kB
VmSize: 94896 kB
VmLck: 0 kB
VmPin: 0 kB
VmHWM: 10636 kB
VmRSS: 9164 kB
RssAnon: 1648 kB
RssFile: 7516 kB
RssShmem: 0 kB
VmData: 1592 kB
VmStk: 132 kB
VmExe: 4 kB
VmLib: 15124 kB
VmPTE: 232 kB
VmSwap: 0 kB
HugetlbPages: 0 kB
CoreDumping: 1
Threads: 1
SigQ: 0/95037
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000000000000
SigCgt: 0000000180000000
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: 0000003fffffffff
CapAmb: 0000000000000000
NoNewPrivs: 0
Seccomp: 0
Speculation_Store_Bypass: thread vulnerable
Cpus_allowed: f
Cpus_allowed_list: 0-3
Mems_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
Mems_allowed_list: 0
voluntary_ctxt_switches: 92
nonvoluntary_ctxt_switches: 17
Signal: 11
Uname: Linux 4.15.0-115-generic x86_64
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_LogindSession: c2
CoreDump: base64
H4sICAAAAAAC/0NvcmVEdW1wAA==
...
I have edited out the core dump part in the above listing.
When I try to re-install gstreamer-1.0 (sudo apt-get install --reinstall --fix-broken gstreamer1.0), I get error messages complaining about package inconsistencies:
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
gstreamer1.0-python3-dbg-plugin-loader : Conflicts: gstreamer1.0-python3-plugin-loader but 1.14.5-0ubuntu1~18.04.1 is to be installed
gstreamer1.0-python3-plugin-loader : Conflicts: gstreamer1.0-python3-dbg-plugin-loader but 1.14.5-0ubuntu1~18.04.1 is to be installed
E: Unable to correct problems, you have held broken packages.
When I try to remove package gstreamer1.0-python3-dbg-plugin-loader, apt-get tells me that the package is not installed.
Moving on to driver version 450.80 (the .run file form the NVIDIA driver download site), the login loop remains. I have the feeling that the problem is somehow related to signing of the kernel modules. There are error messages about PKCS#7 signatures and untrusted keys. As far as I remember, there were 4 of these during the previous driver version (66) and now only 3:
[ 3.229124] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 3.229125] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x1b/0x0/0x0/0x0/0x0)
[ 3.229126] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
[ 3.229126] snd_hda_codec_realtek hdaudioC0D0: dig-out=0x11/0x0
[ 3.229127] snd_hda_codec_realtek hdaudioC0D0: inputs:
[ 3.229128] snd_hda_codec_realtek hdaudioC0D0: Front Mic=0x19
[ 3.229129] snd_hda_codec_realtek hdaudioC0D0: Rear Mic=0x18
[ 3.229129] snd_hda_codec_realtek hdaudioC0D0: Line=0x1a
[ 3.234036] RAPL PMU: API unit is 2^-32 Joules, 5 fixed counters, 655360 ms ovfl timer
[ 3.234037] RAPL PMU: hw unit of domain pp0-core 2^-14 Joules
[ 3.234038] RAPL PMU: hw unit of domain package 2^-14 Joules
[ 3.234038] RAPL PMU: hw unit of domain dram 2^-14 Joules
[ 3.234039] RAPL PMU: hw unit of domain pp1-gpu 2^-14 Joules
[ 3.234039] RAPL PMU: hw unit of domain psys 2^-14 Joules
[ 3.325201] PKCS#7 signature not signed with a trusted key
[ 3.325276] nvidia: loading out-of-tree module taints kernel.
[ 3.325283] nvidia: module license 'NVIDIA' taints kernel.
[ 3.325284] Disabling lock debugging due to kernel taint
[ 3.326117] input: HDA Intel PCH Front Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input6
[ 3.326160] input: HDA Intel PCH Rear Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input7
[ 3.326200] input: HDA Intel PCH Line as /devices/pci0000:00/0000:00:1f.3/sound/card0/input8
[ 3.326226] input: HDA Intel PCH Line Out as /devices/pci0000:00/0000:00:1f.3/sound/card0/input9
[ 3.326252] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input10
[ 3.329110] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[ 3.354626] nvidia-nvlink: Nvlink Core is being initialized, major device number 240
[ 3.358717] AVX2 version of gcm_enc/dec engaged.
[ 3.358717] AES CTR mode by8 optimization enabled
[ 3.359300] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
[ 3.458065] kvm: disabled by bios
[ 3.459534] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 450.80.02 Wed Sep 23 01:13:39 UTC 2020
[ 3.467029] PKCS#7 signature not signed with a trusted key
[ 3.503190] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 450.80.02 Wed Sep 23 00:48:09 UTC 2020
[ 3.521892] kvm: disabled by bios
[ 3.524588] PKCS#7 signature not signed with a trusted key
[ 3.525623] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver
[ 3.525624] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 0
[ 3.535269] intel_rapl: Found RAPL domain package
[ 3.535270] intel_rapl: Found RAPL domain core
[ 3.535271] intel_rapl: Found RAPL domain dram