I pursued this further and found that on multiple computers and keyboards including using both USB and PS2 keyboards.
Right-Alt + PrintScrn + REISUB works only while using PS2 keyboards, and it is consistent with multiple computers. The computer I reported this bug on does not have any PS2 ports. Furthermore REISUB works only with PS2 keyboards with LIVE openSUSE- Leap-15.3-DVD-x86_64-Build151.1-Media.iso and not USB keyboards on any computer I tried with it. Thus I take it that this is a kernel problem, and it is not mapping the Right-Alt key. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/1929011 Title: Alt + SysRq/ PrintScrn + REISUB R-E-I-S-U-B for emergency reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/1929011/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
