Bug#970664: libvte-2.91-0: Terminal not displaying correctly

[Fabián Inostroza]

Hi,

When I take a screenshot of the whole screen the background of the
terminal is transparent, that is, if there is another window behind
then the content of that window is captured, the text of the terminal
is kept.
If I take a screenshot of the terminal window then the background is
transparent, nothing is shown, except text, the alpha channel is zero.
In both cases I see some other corrupt content on the screen.

The only warning I get when launching gnome-terminal from xterm is
$ gnome-terminal -v
# Warning: DESKTOP_STARTUP_ID not set and no fallback available.

then the program detaches from the console.

No related warnings shown on journal or dmesg.

I'm using GNOME with X11 and intel modesetting driver. I've tried all
combinations of X11, wayland, intel and modesetting driver with the
same results. My hardware is a thinkpad x230.

Until now I'm not seeing corruption in other applications, just
gnome-terminal and the gedit terminal plugin. Other terminal
applications work fine (I've tried xterm and terminator).

Regards.



El lun., 21 sept. 2020 a las 5:53, Simon McVittie (<smcv at debian.org>) escribió:
>
> Control: tags -1 + moreinfo
>
> On Sun, 20 Sep 2020 at 19:29:19 -0300, Fabian Inostroza wrote:
> > After an upgrade of libvte gnome-terminal and other software using
> > the library (gedit terminal plugin) doesn't work.
> > Where the console should be there is some transparency and a effect
> > similar to when you record a screen that shows what
> > the camera sees (feedback).
>
> If you take a screenshot (please try both a screenshot of the window and
> a full-screen screenshot), does the display corruption appear in the
> screenshot, or does the screenshot show what it *should* have looked
> like?
>
> If you run gnome-terminal or another program using vte from a different
> terminal such as xterm, are warnings shown?
>
> Are any warnings logged in the systemd journal when you run a program
> that uses vte for the first time in a session?
>
> What desktop environment are you using? If it's GNOME, are you in Wayland
> or Xorg mode?
>
> What graphics hardware are you using? If both open-source and proprietary
> drivers are available, which one are you using? (Some common graphics
> hardware on PC: Intel integrated graphics with DRI/Mesa open-source
> drivers, AMD Radeon series with DRI/Mesa open-source drivers, NVIDIA
> with DRI/Mesa "nouveau" open-source drivers, or NVIDIA with proprietary
> "nvidia-driver".)
>
> Do you see similar graphical corruption anywhere else?
>
> gnome-terminal is working fine for me in GNOME 3.36 in a qemu virtual
> machine with QXL graphics, and in GNOME 3.38 from experimental on real
> hardware (a Lenovo Thinkpad) with Intel graphics, so I'm not going to
> be able to debug this unless we can isolate what is happening differently
> on your system.
>
>     smcv