Linux kernel 5.19.12 can harm Intel laptop computer LCDs

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PSA: Customers working Linux on laptops with Intel processors ought to keep away from Linux Kernel 5.19.12 resulting from an error which may bodily hurt the show. Fortuitously, kernel 5.19.13 has already mounted the difficulty. Variations 6.0 and 6.1 have additionally begun rolling out with many important modifications.

Latest experiences from Intel laptop computer customers working Linux Kernel 5.19.12 describe “white flashing” on their screens. A Linux engineer discovered that the difficulty might damage the LCD, urging customers to right away roll again to an earlier iteration. The crucial flaw prompted builders to situation a fast replace.

The issue seems to originate from a defective Intel graphics driver, which Linux kernel engineer Ville Syrjäl describes as a foul panel energy sequencing delay. Greg Kroah-Hartman, the developer who launched 5.19.13, mentioned that customers ought to solely improve to the brand new kernel in the event that they’re experiencing this situation.

Based on Tom’s {Hardware}, the issue impacts any Intel-based laptop computer that instantly wires the built-in show to the built-in graphics. All Nvidia Optimus laptops and presumably some Intel-Radeon mixed notebooks might face this situation as a result of they at all times let the iGPU management the display, even when the devoted GPU is rendering the graphics. Your laptop computer is perhaps protected for those who can disable Optimus mode.

Most Linux customers possible have to attend till kernel 5.19.13 is offered for his or her particular distro. The engineers inspecting the LCD drawback did not say whether or not the newly-released kernels 6.0 and 6.1 additionally embrace fixes for the difficulty.

Launched for many main distros this week, Linux Kernel 6.0 helps the latest {hardware} architectures, together with Raptor Lake, Meteor Lake, Arc Alchemist, and RDNA 3. It additionally marks a begin for the working system’s entrance into Arm by introducing assist for the Arm-based Qualcomm Snapdragon laptops. Moreover, the brand new kernel fixes a vestigial 20-year-old workaround that slows down current AMD processors.

Kernel 6.1 closes a big Bluetooth safety gap and makes the primary steps in the direction of supporting the Rust programming language, which Google makes use of to develop Android. One other addition is a brand new Error Detection and Correction (EDAC) driver that lets Intel programs decode {hardware} errors sooner, although it is unclear if that features the LCD situation. The brand new EDAC driver error decoder is quicker than the normal firmware decoder however can nonetheless fall again to it if wanted.

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