Public bug reported:
Playing a video in full-screen mode (html5) emits keys into foreground ("ghost
keyboard" inputs).
These key sequences affect the currently selected/foregrounded Window, e.g. the
goneme-terminal flickers the text up and down, changes window focus and inputs
control characters scrambling the typed commandline.
Controlled typing on the commandline is nearly impossible this way, text is
garbled (see screenshot attachment).
Pausing the video stops this behaviour.
This happens on a fresh profile without any extensions/addons.
example youtube video: https://www.youtube.com/watch?v=JHEHPRDVEp4
I logged the keys with
xev 2>&1|while /bin/true ; do read ans; echo $ans;date -Ins ;done >
/tmp/xev.timestamped.log
and add the output here as attachment. From the log it seems to be these
type of repeating sequences (disregard beginning and end of file, since
it is mouse over xev movements):
2016-02-12T10:17:24,551960729+0100
MotionNotify event, serial 34, synthetic NO, window 0x6000001,
2016-02-12T10:17:24,553774616+0100
root 0xc4, subw 0x0, time 159126531, (41,126), root:(42,178),
2016-02-12T10:17:24,555947203+0100
state 0x0, is_hint 0, same_screen YES
2016-02-12T10:17:24,560815414+0100
2016-02-12T10:17:24,627034521+0100
MotionNotify event, serial 34, synthetic NO, window 0x6000001,
2016-02-12T10:17:24,629079758+0100
root 0xc4, subw 0x0, time 159126618, (41,125), root:(42,177),
2016-02-12T10:17:24,631013278+0100
state 0x0, is_hint 0, same_screen YES
2016-02-12T10:17:24,632850769+0100
Currently I doo not know how to debug this further, is there a
possibility to debug the video playback in chromium browser?
Thanks for looking into it,
Martin
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: chromium-browser 48.0.2564.82-0ubuntu0.14.04.1.1108
ProcVersionSignature: Ubuntu 3.19.0-49.55~14.04.1-generic 3.19.8-ckt12
Uname: Linux 3.19.0-49-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 12 09:41:13 2016
Desktop-Session:
'gnome-fallback'
'/etc/xdg/xdg-gnome-fallback:/usr/share/upstart/xdg:/etc/xdg'
'/usr/share/gnome-fallback:/usr/share/gnome:/usr/local/share/:/usr/share/'
EcryptfsInUse: Yes
Env:
'None'
':/home/martin/local/lib'
InstallationDate: Installed on 2016-01-12 (30 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
Load-Avg-1min: 0.85
Load-Processes-Running-Percent: 0.5%
MachineType: LENOVO 4180AA6
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-49-generic
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: chromium-browser
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/05/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 83ET76WW (1.46 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4180AA6
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr83ET76WW(1.46):bd07/05/2013:svnLENOVO:pn4180AA6:pvrThinkPadT420:rvnLENOVO:rn4180AA6:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4180AA6
dmi.product.version: ThinkPad T420
dmi.sys.vendor: LENOVO
gconf-keys: /desktop/gnome/applications/browser/exec =
b'firefox\n'/desktop/gnome/url-handlers/https/command = b'sensible-browser
%s\n'/desktop/gnome/url-handlers/https/enabled =
b'true\n'/desktop/gnome/url-handlers/http/command = b'sensible-browser
%s\n'/desktop/gnome/url-handlers/http/enabled =
b'true\n'/desktop/gnome/session/required_components/windowmanager =
b''/apps/metacity/general/compositing_manager =
b''/desktop/gnome/interface/icon_theme =
b'gnome\n'/desktop/gnome/interface/gtk_theme = b'Clearlooks\n'
modified.conffile..etc.default.chromium.browser: [deleted]
** Affects: chromium-browser (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1544880
Title:
video fullscreen playback emits keys (control/key sequences) into
current foreground window
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