chromium-browser ignores system proxy settings

[Thomas]

Ubuntu 18.04.2
chromium-browser 73.0.3683.86

Network proxy is configured via Settings GUI dialog. chromium-browser is started with verbose output:

[9810:9810:0423/134338.510775:VERBOSE1:proxy_config_service_linux.cc(484)] All gsettings tests OK. Will get proxy config from gsettings.
[9810:9810:0423/134338.510926:VERBOSE1:proxy_config_service_linux.cc(1243)] Obtained proxy settings from annotation hash code 11258689
[9810:9810:0423/134338.510949:VERBOSE1:pref_proxy_config_tracker_impl.cc(184)] 0x55e7b2944b00: set chrome proxy config service to 0x55e7b27e3f10

Listing all gsettings with proxy:
~$ gsettings list-recursively | grep proxy
will return:

org.gnome.system.proxy.http host 'gse.auk.cvclab.lan'
org.gnome.system.proxy.http port 9191
org.gnome.system.proxy.http use-authentication false
org.gnome.system.proxy.http authentication-password ''
org.gnome.system.proxy.http authentication-user ''
org.gnome.system.proxy.http enabled false
org.gnome.evolution.shell.network-config proxy-type 0
org.gnome.evolution.shell.network-config use-http-proxy false
org.gnome.system.proxy.https host ''
org.gnome.system.proxy.https port 0
org.gnome.system.proxy.socks host ''
org.gnome.system.proxy.socks port 0
org.gnome.system.proxy.ftp host ''
org.gnome.system.proxy.ftp port 0
org.gnome.system.proxy use-same-proxy true
org.gnome.system.proxy mode 'manual'
org.gnome.system.proxy autoconfig-url ''
org.gnome.system.proxy ignore-hosts ['localhost', '127.0.0.0/8', '::1']
org.gnome.settings-daemon.plugins.screensaver-proxy active true
org.gnome.settings-daemon.plugins.screensaver-proxy priority 0

chromium-browsers fails to connect to the internet with the error message: ERR_CONNECTION_TIMED_OUT

Starting chromium-browser with the proxy command line parameter:
~$ chromium-browser --proxy-server="gse.auk.cvclab.lan:9191"
This starts the browser and the internet connection works fine.

With Firefox there are no issues, it works with the configured system proxy settings.

Regards

[Thomas (teclab-at)]

Seems related to https://bugs.launchpad.net/kubuntu-ppa/+bug/983777

[Olivier Tilloy (osomon)]

Can you compare the output of the following page when chromium is launched with and without the --proxy-server command-line parameter?

    chrome://net-internals/#proxy

[Thomas (teclab-at)]

Doing what you say only shows two buttons: "Re-apply settings" and "Clear bad proxies". In both versions. There is nothing to compare.

What I did instead was using the net-internals events viewer.
The one which I started from command-line with a proxy shows the configured proxy.
The one which should use the system proxy shows "proxy_server":"DIRECT"

[Thomas (teclab-at)]

Here the log with command-line proxy

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Russ Dill (russ-dill)]

In my case, it's ignoring a file:// based pac, which looks to be intentional:

https://bugs.chromium.org/p/chromium/issues/detail?id=839566#c7

[Russ Dill (russ-dill)]

This is also not working with a http:// url based pac, which should work.

[Elizabeth (ms-lilibeth)]

I experience the same issue on Ubuntu 20.04. Neither manual proxy settings, nor PAC file helps. Additionally, I've exported http_proxy and https_proxy environment variables wherever I could (.bashrc, .zshrc, /etc/environment)

I suppose, the fact that my PC is in the domain or that it has multiple admin users may play a role... but how?

I tried that hack with changing .desktop file
https://askubuntu.com/questions/513840/google-chrome-proxy-settings

But I found my executable in /snap/chromium/1528/bin/chromium.desktop and did not succeed to find the way to edit it (read-only file system). Moreover, this file will be rewritten during package update.

I am totally dissatisfied with the fact that I should run chromium via terminal or create some desktop shortcuts. Is there any hope that the issue will be fixed? What can I do for that?

P.S. I've tried Chromium 89.0.4389.90 - 91.0.4455.2, no one works.

[Elizabeth (ms-lilibeth)]

UPD: I have installed Google Chrome 89.0.4389.90 (Official Build), it works properly.