[Pkg-chromium-maint] Bug#803319: chromium: GPU accelerated video decode failure

[Tony Houghton]

Package: chromium
Version: 47.0.2526.16-1
Severity: normal

GPU accelerated decode for HTML5 video appears to be failing and
chromium is falling back to CPU, judging by the high CPU usage.  It
produces the following output on startup, with no further messages when
attempting to play a video. I've installed chromium-dbg but it didn't
affect the backtrace. Please advise if there's a way I can convert these
addresses to function names and source location etc.

[2069:2069:1028/175848:FATAL:sandbox_seccomp_bpf_linux.cc(203)] Check failed: policy->PreSandboxHook(). 
#0 0x55651de392de <unknown>
#1 0x55651de4eae0 <unknown>
#2 0x55652172f538 <unknown>
#3 0x55652172e88c <unknown>
#4 0x55652172e161 <unknown>
#5 0x5565215f658c <unknown>
#6 0x5565215f5c09 <unknown>
#7 0x55651de0c4ef <unknown>
#8 0x55651de0b610 <unknown>
#9 0x55651d96e088 ChromeMain
#10 0x7f7794de7b45 __libc_start_main
#11 0x55651d96df2f <unknown>

Received signal 6
#0 0x55651de38db8 <unknown>
#1 0x7f779517e8d0 <unknown>
#2 0x7f7794dfb107 gsignal
#3 0x7f7794dfc4e8 abort
#4 0x55651de382a2 <unknown>
#5 0x55651de4ed77 <unknown>
#6 0x55652172f538 <unknown>
#7 0x55652172e88c <unknown>
#8 0x55652172e161 <unknown>
#9 0x5565215f658c <unknown>
#10 0x5565215f5c09 <unknown>
#11 0x55651de0c4ef <unknown>
#12 0x55651de0b610 <unknown>
#13 0x55651d96e088 ChromeMain
#14 0x7f7794de7b45 __libc_start_main
#15 0x55651d96df2f <unknown>
  r8: ffffd567a29f3fa0  r9: ffffd567a29f3f90 r10: 0000000000000008 r11: 0000000000000202
 r12: 00007ffd8239f678 r13: 00005565244d0ef0 r14: 00007ffd8239f688 r15: 00007f779591b260
  di: 0000000000000815  si: 0000000000000815  bp: 00007ffd8239f678  bx: 0000000000000000
  dx: 0000000000000006  ax: 0000000000000000  cx: 00007f7794dfb107  sp: 00007ffd8239f0a8
  ip: 00007f7794dfb107 efl: 0000000000000202 cgf: 635f000000000033 erf: 0000000000000000
 trp: 0000000000000000 msk: 0000000000000000 cr2: 0000000000000000
[end of stack trace]
[2019:2047:1028/175848:ERROR:browser_gpu_channel_host_factory.cc(132)] Failed to launch GPU process.

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'stable-updates'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages chromium depends on:
ii  libasound2            1.0.29-1
ii  libatk1.0-0           2.18.0-1
ii  libavcodec-ffmpeg56   7:2.8.1-1
ii  libavformat-ffmpeg56  7:2.8.1-1
ii  libavutil-ffmpeg54    7:2.8.1-1
ii  libc6                 2.19-22
ii  libcairo2             1.14.2-2
ii  libcups2              2.1.0-4
ii  libdbus-1-3           1.10.0-3
ii  libexpat1             2.1.0-7
ii  libfontconfig1        2.11.0-6.3
ii  libfreetype6          2.6-2
ii  libgcc1               1:5.2.1-22
ii  libgdk-pixbuf2.0-0    2.32.1-1
ii  libglib2.0-0          2.46.1-1
ii  libgnome-keyring0     3.12.0-1+b1
ii  libgtk2.0-0           2.24.28-1
ii  libjpeg62-turbo       1:1.4.1-2
ii  libnspr4              2:4.10.9-2
ii  libnss3               2:3.20-1
ii  libpango-1.0-0        1.38.1-1
ii  libpangocairo-1.0-0   1.38.1-1
ii  libpci3               1:3.3.1-1
ii  libspeechd2           0.8-7
ii  libsrtp1              1.5.2~dfsg-1
ii  libstdc++6            5.2.1-22
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            1:5.0.1-2+b2
ii  libxi6                2:1.7.5-1
ii  libxml2               2.9.2+zdfsg1-4
ii  libxrandr2            2:1.5.0-1
ii  libxrender1           1:0.9.8-1+b1
ii  libxslt1.1            1.1.28-2+b2
ii  libxss1               1:1.2.2-1
ii  libxtst6              2:1.2.2-1+b1
ii  x11-utils             7.7+3
ii  xdg-utils             1.1.1-1

chromium recommends no packages.

Versions of packages chromium suggests:
ii  chromium-l10n  47.0.2526.16-1

-- no debconf information