Interests: News, Finance, Computer, Science, Tech, and Living

  • 9 Posts
  • 493 Comments
Joined 2 years ago
cake
Cake day: June 13th, 2023

help-circle





  • The thing about most default configs of any OS is that user storage is largely accessable to all apps. True of Linux, Android. Windows, …

    Graphene has options to restrict that but you have to set it up that way. Android also has App sandboxing for app data.

    Thinking through the threat model of course is always good as is hardening. All security is porous. Linux is fine generally. If one is exposing services on the public net it is not clear that any OS or software is sufficiently secure, that takes constant effort in terms of monitoring and management.



  • There are various designs of backlights. They typically have a stack of loose components in an assembly. By loose I mean not totally fixed but not too free. They have to free float enought that temperature changes do not cause issues. They also have to not stick, warp, or buckle over time. Harder to engineer then you might think.

    So consider what might happen if for example the top backlight film might buckle some then stick to the back of the lcd. The film might deform which would change its optical properties. Then later thermal cycling might cause release. It might do same elsewhere.

    Not saying this is mechanism, but just example.

    Edit: Keep in mind the LCD is glass, and the backlight components are plastic. Very different thermal expansion coefficients. Then add LED or CCFL lighting and you have a big changing heat source. Add on top of that humidity changes too.



  • Sounds to me like the backlight behind the LCD. They have components which could potentially sag, stick, or warp. White screen is probably best way to see. Also look at various angles. May be more visible at some angles then others.

    Hard to unsee. I know this feeling. I used to work in the industry years ago. Displays are never perfect and hard to unsee things once you see them especially when it was part of your job.