[Pkg-chromium-maint] Bug#848895: chromium: still freezing randomly but usually on changing virtual screens

[lkcl]

Package: chromium
Version: 55.0.2883.75-3
Followup-For: Bug #848895

(hi!  note: after the other bug in which virtualbox was being a pain i removed
virtualbox and upgraded to latest testing)

this randomly-freezing issue has been around for a considerable time,
and is reproducible albeit on a 2-3 day basis.

i run with about 20-30 tabs open (10x that many in firefox) and i've noticed
that chromium stops updating the screen after returning to it from an
alternative virtual screen with fvwm2.

now, that's *not* when i return and click *on* chromium (or, more specifically,
move the mouse over it - i've set up fvwm2 to use "mouse move to highlight")
that really is: just come back to a different virtual screen, to find that
it's simply... hung and is no longer responding to X11 events... at all.

interestingly the CPU usage is absolutely minimal.

i'm currently going through the list of processes killing them one by
one to see if that helps...



-- System Information:
Debian Release: 7.4
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.8lkcl (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages chromium depends on:
ii  libasound2           1.1.2-1
ii  libatk1.0-0          2.18.0-1
ii  libavcodec57         10:3.2.2-dmo3
ii  libavformat57        10:3.2.2-dmo3
ii  libavutil55          10:3.2.2-dmo3
ii  libc6                2.23-4
ii  libcairo2            1.14.8-1
ii  libcups2             2.2.1-6.0nosystemd1
ii  libdbus-1-3          1.10.14-1.0nosystemd1
ii  libevent-2.0-5       2.0.19-stable-3
ii  libexpat1            2.2.0-1
ii  libflac8             1.3.1-4
ii  libfontconfig1       2.11.0-6.7
ii  libfreetype6         2.6.3-3+b1
ii  libgcc1              1:6.2.1-5
ii  libgdk-pixbuf2.0-0   2.36.0-1
ii  libglib2.0-0         2.50.1-1
ii  libgtk2.0-0          2.24.29-1
ii  libharfbuzz0b        1.2.7-1+b1
ii  libicu57             57.1-5
ii  libjpeg62-turbo      1:1.5.1-2
ii  libminizip1          1.1-8
ii  libnspr4             2:4.12-2
ii  libnss3              2:3.26-2
ii  libpango-1.0-0       1.38.1-1
ii  libpangocairo-1.0-0  1.38.1-1
ii  libpng16-16          1.6.26-6
ii  libpulse0            9.0-5.0nosystemd1
ii  libre2-3             20170101+dfsg-1
ii  libsnappy1v5         1.1.3-3
ii  libstdc++6           6.2.1-5
ii  libvpx4              1.6.0-3
ii  libwebp6             0.5.1-2
ii  libwebpdemux2        0.5.2-1
ii  libx11-6             2:1.6.4-2
ii  libx11-xcb1          2:1.6.4-2
ii  libxcb1              1.12-1
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           1:5.0.3-1
ii  libxi6               2:1.7.8-2
ii  libxml2              2.9.4+dfsg1-2.1
ii  libxrandr2           2:1.5.1-1
ii  libxrender1          1:0.9.10-1
ii  libxslt1.1           1.1.29-2
ii  libxss1              1:1.2.2-1
ii  libxtst6             2:1.2.3-1
ii  x11-utils            7.7+3
ii  xdg-utils            1.1.0~rc1+git20111210-7
ii  zlib1g               1:1.2.8.dfsg-2+b1

Versions of packages chromium recommends:
ii  fonts-liberation  1.07.3-3

Versions of packages chromium suggests:
pn  chromium-l10n  <none>

-- no debconf information