ubiquity crashed when trying to install BIonic on Inspiron 7577

[Po-Hsu Lin]

ubiquity was started on this system from command line:
ubuntu@ubuntu:~$ ubiquity -d --pdb
Trace/breakpoint trap (core dumped)

The installer was crashed when the installation begins (after the username / password setting page)
The pdb option does not work, the program just crashed before entering pdb.

This is the syslog till it crashes:
May 23 08:55:11 ubuntu localechooser: info: debian-installer/language preseeded to 'en' (seen: false)
May 23 08:55:11 ubuntu localechooser: info: debian-installer/country preseeded to 'US' (seen: true)
May 23 08:55:11 ubuntu localechooser: info: debian-installer/locale preseeded to 'en_US.UTF-8' (seen: true)
May 23 08:55:12 ubuntu localechooser: info: Language = 'en'
May 23 08:55:12 ubuntu localechooser: info: line=en;0;US;en_US.UTF-8;;console-setup
May 23 08:55:12 ubuntu localechooser: info: Set debian-installer/language = 'en'
May 23 08:55:12 ubuntu localechooser: info: Default country = 'US'
May 23 08:55:12 ubuntu localechooser: info: Default locale = 'en_US.UTF-8'
May 23 08:55:12 ubuntu localechooser: info: Set debian-installer/consoledisplay = 'console-setup'
May 23 08:55:12 ubuntu localechooser: info: Set debian-installer/country = 'US'
May 23 08:55:12 ubuntu localechooser: info: Set debian-installer/locale = 'en_US.UTF-8'
May 23 08:55:12 ubuntu localechooser: info: System locale (debian-installer/locale) = 'en_US.UTF-8'
May 23 08:55:12 ubuntu ubiquity: /usr/lib/ubiquity/localechooser/localechooser: 910: [: C.UTF-8: unexpected operator
May 23 08:55:12 ubuntu ubiquity[3928]: debconffilter_done: ubi-timezone (current: ubi-timezone)
May 23 08:55:12 ubuntu ubiquity[3928]: Step_before = stepLocation
May 23 08:55:12 ubuntu ubiquity[3928]: switched to page usersetup
May 23 08:55:22 ubuntu kernel: [ 135.362866] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: errors=remount-ro
May 23 08:55:24 ubuntu ubiquity[3928]: debconffilter_done: ubi-usersetup (current: ubi-usersetup)
May 23 08:55:24 ubuntu ubiquity[3928]: Step_before = stepUserInfo
May 23 08:55:24 ubuntu kernel: [ 137.774862] do_trap: 87 callbacks suppressed
May 23 08:55:24 ubuntu kernel: [ 137.774866] traps: ubiquity[3928] trap int3 ip:7f2e58edcc41 sp:7ffc5d9cb330 error:0 in libglib-2.0.so.0.5600.1[7f2e58e8b000+113000]
May 23 08:55:26 ubuntu partman-swapfile: 2097152+0 records in
May 23 08:55:26 ubuntu partman-swapfile: 2097152+0 records out
May 23 08:55:26 ubuntu partman-swapfile: 2147483648 bytes (2.1 GB, 2.0 GiB) copied, 4.06083 s, 529 MB/s
May 23 08:55:44 ubuntu kernel: [ 157.118656] Adding 2097148k swap on /target/swapfile. Priority:-2 extents:6 across:2260988k FS

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CasperVersion: 1.394
CurrentDesktop: ubuntu:GNOME
Date: Wed May 23 04:56:22 2018
InstallCmdLine: BOOT_IMAGE=(loop)/casper/vmlinuz iso-scan/filename=/iso/ubuntu-18.04-desktop-amd64.iso file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Po-Hsu Lin (cypressyew)]

This is the log from /var/log/installer/debug

It crashes with:

(ubiquity:3928): Gdk-ERROR **: 04:55:24.804: The program 'ubiquity' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadAccess (attempt to access private resource denied)'.
  (Details: serial 22852 error_code 10 request_code 130 (MIT-SHM) minor_code 1)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)