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posted by martyb on Wednesday April 05 2017, @11:33AM   Printer-friendly
from the coding-skills-on-display dept.

LinuxGizmos has an interesting article on how an Intel Engineer fixed up Linux's DisplayPort compliance, and got the kernel patch moved upstream.

At ELC 2017, Intel's Manasi Navare described how she patched Linux 4.12 for true DisplayPort compliance, and offered tips on pushing patches upstream.

If you've ever hooked up a Linux computer to a DisplayPort monitor and encountered only a flickering or blank screen, we've got good news for you. A graphics kernel developer at Intel's Open Source Technology Center has solved the problem with a patch that will go into Linux Kernel 4.12. Manasi Navare's patch modifies Atomic Kernel Mode Setting (KMS) technology to gracefully drop down to a lower resolution to display the image.

"Someone had to fix this problem, so I said okay, I have the knowledge and I have the community to help me," said Navare at the recent Embedded Linux Conference.


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  • (Score: 1, Interesting) by Anonymous Coward on Wednesday April 05 2017, @01:03PM

    by Anonymous Coward on Wednesday April 05 2017, @01:03PM (#489112)

    Step 0: Make sure we have control of the situation.
    Step 1: Verify that if we do X, it will work.
    Step 2: Step 2 says X will work, so commit X.
    Step 3: Ooops, the commit did not work as planned.
    Step 4: Double oops, I don't have a plan for commit not working.

    What can I say, with the real world, sometimes stuff happens.
    The patch added a recovery plan for the commit failing.

    Probably a good lesson for folks that think they can do step 0.

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