Bug#833501: Aw snap while using Facebook

[Ara Keary]

Package: chromium
Version: 53.0.2785.92-2
Followup-For: Bug #833501

Hi,

i confirm a similar behaviour occurs on my system, which has HDMI screen, when
i start chromium with
  chromium --force-device-scale-factor=1.8

or when including a file containing

export GDK_DPI_SCALE=0.5
export GDK_SCALE=2
export CHROMIUM_FLAGS="$CHROMIUM_FLAGS --force-device-scale-factor=2"

in /etc/chromium.d/

However, the problem does not occur when i remove those options (but then the
displayed result is not usable, to small to read).

Best,

Ara



-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 
'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages chromium depends on:
ii  libasound2   1.1.2-1
ii  libatk1.0-0  2.21.90-2
ii  libavcodec57 10:3.0-dmo4
ii  libavformat5710:3.0-dmo4
ii  libavutil55  10:3.0-dmo4
ii  libc62.24-2
ii  libcairo21.14.6-1+b1
ii  libcups2 2.1.4-4
ii  libdbus-1-3  1.10.10-1
ii  libexpat12.2.0-1
ii  libfontconfig1   2.11.0-6.7
ii  libfreetype6 2.6.3-3+b1
ii  libgcc1  1:6.2.0-3
ii  libgdk-pixbuf2.0-0   2.34.0-1
ii  libglib2.0-0 2.49.6-1
ii  libgnome-keyring03.12.0-1+b1
ii  libgtk-3-0   3.21.5-3
ii  libharfbuzz0b1.2.7-1+b1
ii  libjpeg62-turbo  1:1.5.0-1
ii  libnettle6   3.2-1
ii  libnspr4 2:4.12-2
ii  libnss3  2:3.25-1
ii  libpango-1.0-0   1.40.2-1
ii  libpangocairo-1.0-0  1.40.2-1
ii  libpci3  1:3.3.1-1.1
ii  libpulse09.0-3
ii  libspeechd2  0.8.5-1
ii  libstdc++6   6.2.0-3
ii  libx11-6 2:1.6.3-1
ii  libxcomposite1   1:0.4.4-1
ii  libxcursor1  1:1.1.14-1+b1
ii  libxdamage1  1:1.1.4-2+b1
ii  libxext6 2:1.3.3-1
ii  libxfixes3   1:5.0.2-1
ii  libxi6   2:1.7.6-1
ii  libxml2  2.9.4+dfsg1-1+b1
ii  libxrandr2   2:1.5.0-1
ii  libxrender1  1:0.9.9-2
ii  libxslt1.1   1.1.29-1
ii  libxss1  1:1.2.2-1
ii  libxtst6 2:1.2.2-1+b1
ii  x11-utils7.7+3
ii  xdg-utils1.1.1-1

Versions of packages chromium recommends:
ii  fonts-liberation  1:1.07.4-2

Versions of packages chromium suggests:
ii  chromium-l10n  53.0.2785.92-2

-- no debconf information

Bug#833501: Aw snap while using Facebook

[Antti-Juhani Kaijanaho]

Package: chromium
Version: 52.0.2743.116-1
Severity: normal

After upgrading chromium this morning
[UPGRADE] chromium:amd64 52.0.2743.82-4 -> 52.0.2743.116-1
I've been getting frequent Aw snap crashes in Facebook, usually within a minute
of starting to use it.  Downgrading seems to fix the problem.

Following the advice in https://wiki.debian.org/Chromium/Debugging (which
appears to be out of date with respect to chromium-dbg) I installed -dbg and
-dbgsym packages for Chromium and its direct dependencies and then reproduced
the problem in chromium --debug:

# Env:
# LD_LIBRARY_PATH=
#PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
#GTK_PATH=
#  CHROMIUM_FLAGS= --show-component-extension-options 
--ignore-gpu-blacklist --disable-background-networking 
--ppapi-flash-path=/usr/lib/pepperflashplugin-nonfree/libpepflashplayer.so 
--ppapi-flash-version=21.0.0.242
/usr/bin/gdb /usr/lib/chromium/chromium -x /tmp/chromiumargs.m39soN
GNU gdb (Debian 7.11.1-2) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
.
Find the GDB manual and other documentation resources online at:
.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/chromium/chromium...Reading symbols from 
/usr/lib/debug/.build-id/f4/11584ae3d6b2ccff8656208d0e886b9718c66d.debug...(no 
debugging symbols found)...done.
(no debugging symbols found)...done.
(gdb) handle SIG33 pass nostop noprint
SignalStop  Print   Pass to program Description
SIG33 NoNo  Yes Real-time event 33
(gdb) set pagination 0
(gdb) run
Starting program: /usr/lib/chromium/chromium --show-component-extension-options 
--ignore-gpu-blacklist --disable-background-networking 
--ppapi-flash-path=/usr/lib/pepperflashplugin-nonfree/libpepflashplayer.so 
--ppapi-flash-version=21.0.0.242 --single-process 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffdd09d700 (LWP 9359)]
[New Thread 0x7fffdc89c700 (LWP 9364)]
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[New Thread 0x7fff96ffd700 (LWP 9385)]
[New Thread 0x7fff967fc700 (LWP 9386)]
[9355:9381:0805/102349:ERROR:nss_util.cc(842)] After loading Root Certs, 
loaded==false: NSS error code: -8018
[New Thread 0x7fff95ffb700 (LWP 9425)]
[New Thread 0x7fff957fa700 (LWP 9427)]
[9355:9381:0805/102349:ERROR:proxy_service_factory.cc(128)] Cannot use V8 Proxy 
resolver in single process mode.
[New Thread 0x7fff875a9700 (LWP 9428)]
[9355:9381:0805/102349:ERROR:proxy_service_factory.cc(128)] Cannot use V8 Proxy 
resolver in single process mode.
[New Thread 0x7fff84a96700 (LWP 9430)]
[New Thread 0x7fff85297700 (LWP 9429)]
[New Thread 0x7fff84295700 (LWP 9433)]
[New Thread 0x7fff83a94700 (LWP 9434)]
[New Thread 0x7fff83293700 (LWP 9435)]
[Thread 0x7fff83293700 (LWP 9435) exited]
[Thread 0x7fff83a94700 (LWP 9434) exited]
[9355:9355:0805/102349:ERROR:background_mode_manager_aura.cc(13)] Not 
implemented reached in virtual void 
BackgroundModeManager::EnableLaunchOnStartup(bool)
[New Thread 0x7fff83a94700 (LWP 9437)]
[Thread 0x7fff83a94700 (LWP 9437) exited]
[New Thread 0x7fff83293700 (LWP 9438)]
[New Thread 0x7fff81d8f700 (LWP 9439)]
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[New Thread 0x7fff78a1f700 (LWP 9446)]
[Thread 0x7fff78a1f700 (LWP 9446) exited]
[New Thread 0x7fff78a1f700 (LWP 9447)]
[New Thread 0x7fff7819e700 (LWP 9448)]
[Thread 0x7fffd5a30700 (LWP 9367) exited]
[Thread 0x7fff84a96700 (LWP 9430) exited]
[New Thread