Well, I haven’t yet tried actually using it. It seems supertuxkart can reliably freeze Plasma. After starting entering a game, the screen briefly freezes, then Plasma displays “Desktop effects were restarted due to a graphics reset” accompanied by following logs: [ 2346.824555] msm_dpu 1a01000.display-controller: [drm:hangcheck_handler [msm]] *ERROR* 5.0.6.0: hangcheck detected gpu lockup rb 2! [ 2346.825327] msm_dpu 1a01000.display-controller: [drm:hangcheck_handler [msm]] *ERROR* 5.0.6.0: completed fence: 59486 [ 2346.825920] msm_dpu 1a01000.display-controller: [drm:hangcheck_handler [msm]] *ERROR* 5.0.6.0: submitted fence: 59494 [ 2346.826698] msm_dpu 1a01000.display-controller: [drm:recover_worker [msm]] *ERROR* 5.0.6.0: hangcheck recover! [ 2346.827442] msm_dpu 1a01000.display-controller: [drm:recover_worker [msm]] *ERROR* 5.0.6.0: offending task: supertuxkart (/usr/bin/supertuxkart) The game will run, but Plasma remains frozen. The only fix is to SSH into the phone and restart plasmashell using systemctl restart --user plasma-plasmashell. Web browsing mostly works, though in this case, the phone only handles YouTube playback up to 480p. Oh, one more interesting observation: Cloudflare CAPTCHA causes Firefox to freeze with 100% CPU usage (single-core). So entering websites like lemmy.world is not possible.