Shift-PgUp is something which is AFAIK intercepted by the terminal (either console, xterm or some other terminal application) and does usually not reach screen.
Use C-a [ and scroll then with PgUp/PgDn and cursor keys.
Shift-PgUp is something which is AFAIK intercepted by the terminal (either console, xterm or some other terminal application) and does usually not reach screen.
Use C-a [ and scroll then with PgUp/PgDn and cursor keys.