The simplest for you would be to run redshift-gtk under strace, or something similar.
Sure! $ strace redshift-gtk 2>&1 | cat > redshift.log Log file attached.
- Bug#813553: gtk-redshift: Fails to start under awesom... Alexander Trousevich
- Bug#813553: gtk-redshift: Fails to start under a... Ritesh Raj Sarraf
- Bug#813553: gtk-redshift: Fails to start und... Ritesh Raj Sarraf
- Bug#813553: gtk-redshift: Fails to start... Alexander Trousevich
- Bug#813553: gtk-redshift: Fails to start... Ritesh Raj Sarraf
