As I had not heard anything from you for a while I went ahead and followed your directions to return to the prior version as follows:
dhdurgee@z560:~/Downloads/debs$ sudo dpkg -i *.deb [sudo] password for dhdurgee: dpkg: warning: downgrading gir1.2-gtk-3.0:amd64 from 3.24.20-0ubuntu1.1 to 3.24.20-0ubuntu1 (Reading database ... 334032 files and directories currently installed.) Preparing to unpack gir1.2-gtk-3.0_3.24.20-0ubuntu1_amd64.deb ... Unpacking gir1.2-gtk-3.0:amd64 (3.24.20-0ubuntu1) over (3.24.20-0ubuntu1.1) ... dpkg: warning: downgrading gtk-update-icon-cache from 3.24.20-0ubuntu1.1 to 3.24.20-0ubuntu1 Preparing to unpack gtk-update-icon-cache_3.24.20-0ubuntu1_amd64.deb ... Unpacking gtk-update-icon-cache (3.24.20-0ubuntu1) over (3.24.20-0ubuntu1.1) ... dpkg: warning: downgrading libgail-3-0:amd64 from 3.24.20-0ubuntu1.1 to 3.24.20-0ubuntu1 Preparing to unpack libgail-3-0_3.24.20-0ubuntu1_amd64.deb ... Unpacking libgail-3-0:amd64 (3.24.20-0ubuntu1) over (3.24.20-0ubuntu1.1) ... dpkg: warning: downgrading libgtk-3-0:amd64 from 3.24.20-0ubuntu1.1 to 3.24.20-0ubuntu1 Preparing to unpack libgtk-3-0_3.24.20-0ubuntu1_amd64.deb ... Unpacking libgtk-3-0:amd64 (3.24.20-0ubuntu1) over (3.24.20-0ubuntu1.1) ... dpkg: warning: downgrading libgtk-3-bin from 3.24.20-0ubuntu1.1 to 3.24.20-0ubuntu1 Preparing to unpack libgtk-3-bin_3.24.20-0ubuntu1_amd64.deb ... Unpacking libgtk-3-bin (3.24.20-0ubuntu1) over (3.24.20-0ubuntu1.1) ... dpkg: warning: downgrading libgtk-3-common from 3.24.20-0ubuntu1.1 to 3.24.20-0ubuntu1 Preparing to unpack libgtk-3-common_3.24.20-0ubuntu1_all.deb ... Unpacking libgtk-3-common (3.24.20-0ubuntu1) over (3.24.20-0ubuntu1.1) ... Setting up gtk-update-icon-cache (3.24.20-0ubuntu1) ... Setting up libgtk-3-common (3.24.20-0ubuntu1) ... Processing triggers for libglib2.0-0:amd64 (2.64.6-1~ubuntu20.04.4) ... Setting up libgtk-3-0:amd64 (3.24.20-0ubuntu1) ... Setting up libgtk-3-bin (3.24.20-0ubuntu1) ... Setting up gir1.2-gtk-3.0:amd64 (3.24.20-0ubuntu1) ... Setting up libgail-3-0:amd64 (3.24.20-0ubuntu1) ... Processing triggers for man-db (2.9.1-1) ... Processing triggers for libc-bin (2.31-0ubuntu9.7) ... dhdurgee@z560:~/Downloads/debs$ Unfortunately the results were not as hoped. Attached please find the backtrace when I attempted to use fcl afterwards. What next? ** Attachment added: "back trace for fcl run" https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/1962807/+attachment/5567121/+files/gdb-fcl4.txt -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gtk+2.0 in Ubuntu. https://bugs.launchpad.net/bugs/1962807 Title: segfault in libgtk-x11-2.0.so.0 with several programs Status in gtk+2.0 package in Ubuntu: Incomplete Bug description: Today I have been encountering segfaults in fcl and virtualbox: Mar 2 07:20:40 Z560 kernel: [817210.808918] show_signal_msg: 12 callbacks suppressed Mar 2 07:20:40 Z560 kernel: [817210.808922] fcl[933482]: segfault at 7fb98814fdb8 ip 00007fb96efab218 sp 00007ffc4a89b918 error 4 in libgtk-x11-2.0.so.0.2400.32[7fb96ed5b000+270000] Mar 2 07:20:40 Z560 kernel: [817210.808932] Code: 79 db ff 48 83 c4 20 5b 5d 41 5c c3 66 0f 1f 44 00 00 48 8b b7 90 00 00 79 48 89 d7 e9 c1 a1 db 58 90 f3 0f 1e fa 48 83 d9 18 <48> 8b 05 99 4b 1a 19 48 89 44 24 08 48 8b 5d 24 08 48 85 c0 74 12 Mar 2 07:20:40 Z560 systemd[1]: Created slice system-systemd\x2dcoredump.slice. Mar 2 07:20:40 Z560 systemd[1]: Started Process Core Dump (PID 933484/UID 0). Mar 2 07:20:40 Z560 systemd-coredump[933485]: Process 933482 (fcl) of user 1000 dumped core.#012#012Stack trace of thread 933482:#012#0 0x00007fb96efab218 gtk_option_menu_get_type (libgtk-x11-2.0.so.0 + 0x2b4218)#012#1 0x0000000000000002 n/a (n/a + 0x0) Mar 2 07:20:40 Z560 systemd[1]: systemd-coredump@0-933484-0.service: Succeeded. and: Mar 2 07:51:19 Z560 kernel: [819049.877381] VirtualBox[936782]: segfault at 7ff8860b4db8 ip 00007ff86cf10218 sp 00007ffdd1a53758 error 4 in libgtk-x11-2.0.so.0.2400.32[7ff86ccc0000+270000] Mar 2 07:51:19 Z560 kernel: [819049.877395] Code: 79 db ff 48 83 c4 20 5b 5d 41 5c c3 66 0f 1f 44 00 00 48 8b b7 90 00 00 79 48 89 d7 e9 c1 a1 db 58 90 f3 0f 1e fa 48 83 d9 18 <48> 8b 05 99 4b 1a 19 48 89 44 24 08 48 8b 5d 24 08 48 85 c0 74 12 Mar 2 07:51:19 Z560 systemd[1]: Started Process Core Dump (PID 936794/UID 0). Mar 2 07:51:19 Z560 systemd-coredump[936795]: Process 936782 (VirtualBox) of user 1000 dumped core.#012#012Stack trace of thread 936782:#012#0 0x00007ff86cf10218 gtk_option_menu_get_type (libgtk-x11-2.0.so.0 + 0x2b4218)#012#1 0x0000000000000002 n/a (n/a + 0x0) Mar 2 07:51:19 Z560 systemd[1]: systemd-coredump@10-936794-0.service: Succeeded. As this library has not changed I am assuming the problem is with one of the libraries it depends upon. Several packages were updated in the past few days, I believe including some that may be the cause of the problem. I have attached a zip with my /var/log/apt/term.log and history.log for inspection. Version of library is 2.24.32-4ubuntu4 and library file is dated 2021-03-31 here. 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