Enabilng webgl

suoko

I enabled webgl followingthe commands found in telegram:

These are the Terminal commands I used: 
sudo ubports-qa install xenial_-_gpu-browser

sudo -i

mount -o remount,rw /

cd /etc/profile.d/

cp disable-qtwebengine-gpu.sh disable-qtwebengine-gpu.old

rm disable-qtwebengine-gpu.sh

and it works ok but i'm left with this apt status:

ablet@ubuntu-phablet:~$ sudo apt dist-upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages will be DOWNGRADED:
  lxc-android-config
0 upgraded, 0 newly installed, 1 downgraded, 0 to remove and 0 not upgraded.
Need to get 0 B/48.7 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
dpkg: warning: downgrading lxc-android-config from 0.233+ubports0+0~20210326233237.3~1.gbp614445 to 0.233+ubports0+0~20210319074119.1~1.gbp6f8eda
(Reading database ... 51142 files and directories currently installed.)
Preparing to unpack .../lxc-android-config_0.233+ubports0+0~20210319074119.1~1.gbp6f8eda_all.deb ...
Unpacking lxc-android-config (0.233+ubports0+0~20210319074119.1~1.gbp6f8eda) over (0.233+ubports0+0~20210326233237.3~1.gbp614445) ...
dpkg: error processing archive /var/cache/apt/archives/lxc-android-config_0.233+ubports0+0~20210319074119.1~1.gbp6f8eda_all.deb (--unpack):
 unable to make backup link of './lib/udev/rules.d/70-android.rules' before installing new version: Invalid cross-device link
Processing triggers for ureadahead (0.100.0-19.1) ...
Processing triggers for dbus (1.10.6-1ubuntu3.6) ...
Errors were encountered while processing:
 /var/cache/apt/archives/lxc-android-config_0.233+ubports0+0~20210319074119.1~1.gbp6f8eda_all.deb
W: No sandbox user '_apt' on the system, can not drop privileges
E: Sub-process /usr/bin/dpkg returned an error code (1)

Can this be fixed?

flohack

@suoko the problem is that we bind-mount a lot of files, if an update comes across such a file then it cannot be updated. Thats also why apt is only used as an update method in development. In your case its probably Ok to ignore the error though.

mateo_salta

@suoko were you on dev channel before using the ubports qa tool?

zubozrout

@mateo_salta I am getting the same and am on the dev channel, so that's not it: https://forums.ubports.com/topic/3188/morph-browser-not-possible-to-show-map-due-to-missing-webgl/9?_=1627584581816 ... Is the ubports-qa command even available on stable/staging? I thought it is not present at all there.

kugiigi

@zubozrout It is but it's usually not recommended to use there especially if devel already has many changes compared to them. So it's safer when closer to an OTA release