u/lukmly013 💾 (lemmy.sdf.org)

I like computers, trains, space, radio-related everything and a bunch of other tech related stuff. User of GNU+Linux.
I am also dumb and worthless.
My laptop is ThinkPad L390y running Arch.
I own RTL-SDRv3 and RSP1 clone.

SDF Unix shell username: user224

  • 16 Posts
  • 157 Comments
Joined 3 years ago
cake
Cake day: June 17th, 2023

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  • Well, I haven’t yet tried actually using it.

    It seems supertuxkart can reliably freeze Plasma.
    After 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.









  • Hey. How did you get to this? I mean, how did you learn to do this?
    What knowledge and skills are necessary and how could one obtain them?

    Mobile Linux development (low level) interests me (mostly because I just want a pocket-sized Linux computer), but I don’t have any idea where one can even start with that.
    Yes, I know it will take time, but no skills and knowledge just spawn in the brain (yet*).
    *perhaps brain impalnts will fix this in the future

    I’ve found couple of people having similar questions on Reddit, but they often get hit with something along the lines of “If you have to ask, don’t bother.”
    I just need pointers.

    Thanks (even if you don’t reply).