On Tue, Aug 20, 2019 at 6:35 AM Samuel Sieb <samuel@sieb.net> wrote:
On 8/19/19 4:54 AM, Gianluca Cecchi wrote:
> If you point me on how to get related log lines in journal in both
> working and not working configurations, I can get more info.
> Seen on several threads that with Xwayland and gnome-shell not so easy
> to see startup log files...

Shouldn't make any difference.  To get the logs from the current boot,
use "journalctl -b".  For the previous boot, "journalctl -b -1".  And so on.
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Thanks for your answer, but what you write is clear and is for system wide messaging/logging.
I don't want to bloat with all logs, but only the ones related to Xwayland so that it can be easier to narrow the reason why the external monitor connection is not detected with the latest kernel...
BTW: also in journal when thing work ok I seem not to find any particular information about display settings change when I connect external monitor, so I don't know what to compare with....

Gianluca