AMD Ryzen and Linux 5.2


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Linux 5.2 Should Resolve Many AMD Ryzen Laptop Touchscreens/Touchpads Not Working
Linux 5.2 is certainly going to be a big kernel release... On top of many new features and other changes, AMD Ryzen laptops will be better supported by this kernel update to be released as stable around July.
A number of AMD Ryzen laptops up to this point haven't had working touchscreens/touchpads when running on the mainline kernel. That's been due to a lack of AMD PCIe MP2 I2C controller support, but a new driver is being merged for Linux 5.2 to properly support that controller.
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Linux 5.2 Will Fix Touch Input on Ryzen Laptops
Most laptops rely on Intel processors and run Windows 10. But there's some good news for the relatively few people who use Linux on Ryzen-powered laptops: the Linux 5.2 kernel will reportedly improve the performance of touchscreens and trackpads in devices matching that particular configuration.
The next major kernel update to Linux will feature proper AMD PCIe MP2 I2C controller support via the i2c-amd-mp2 driver that's ready to be merged into the Linux 5.2 release. Phoronix said AMD released some of the code on which this driver is based in 2018, which required "a rewrite and going through several rounds of review to get it into shape for merging to mainline." Now the code has run that gauntlet and should be ready for release.
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