So I'm trying to programmatically conduct Google Lighthouse audits on several webpages, and I'm running into an issue. After installing Chrome and node/npm/lighthouse on an Amazon Linux 2 EC2 instance, I am able to successfully run LightHouse tests when I initiate a GUI session and run a command from a terminal within the GUI (this launches chrome and conducts the test as usual) but I am unable to do the same thing from the command line. This is the error I get when launching lighthouse.
ChromeLauncher:error [42565:42565:0516/170626.787500:ERROR:brower_main_loop.cc (1386) Unable to open X display.
While there are a couple of other errors, I believe this is the one I should be paying attention to, because when I try to just launch Google Chrome, that is the exact error I get, so I am inclined to believe it is an issue with trying to launch on a display.
I've also tried the "--headless" option when launching chrome and get
[0516/171128.450564:WARNING:headless_browser_main_parts.cc(83)] Cannot create Pref Service with no user data dir. [0516/171128.521499:ERROR:vaapi_wrapper.cc(594)] Could not get a valid VA display [0516/171128.524992:ERROR:gpu_init.cc(426)] Passthrough is not supported, GL is egl
Another user with a similar question decided to use the Google Pagespeeds API, which will not a be a solution for me-- it needs to be done locally.
Because this works fine on a GUI session with the same server, I really think it's just a display rendering issue, but I don't know how to solve this. Maybe "simulating" a display? I've also tried entering export DISPLAY=1:0, which apparently worked for some users and caused me to stop seeing the error, but the functionality was still broken when running the audit.
Any help would be so useful!!
