The Many Changes & Additions To Find With The Linux 5.2 Kernel

Written by Michael Larabel in Software on 19 May 2019. Page 2 of 2. 2 Comments

File-Systems / Storage:

- Optional support for per-directory case-insensitive file/folder support for EXT4.

- Better SMR drive support for F2FS.

- The Andrew File-System (AFS) can now run the likes of Firefox and GNOME following some file-locking changes to satisfy SQLite databases.

- The Linux legacy IDE driver has been deprecated though this isn't IDE itself with the libATA-based IDE drivers still expected to stick around. The legacy IDE driver is expected to be removed in 2021.

- Useful fixes and improvements for Btrfs.

- A big pile of new stuff for XFS.

Other Hardware:

- Improved AMD Ryzen laptop support thanks to the new PCIe MP2 driver.

- Other laptop support improvements.

- Restored hibernation support for various Intel Baytrail/Cherrytrail systems.

- The GPIO vibrator driver was merged along with other input updates (

- Many media driver updates.

- Support for Intel Sound Open Firmware in the audio drivers.

- The NVIDIA AltMode driver was added for enabling VirtualLink device support with new Turing graphics cards that feature USB-C connections.

- Various USB improvements.

- The new Realtek RTW88 WiFi driver for different chipsets and a replacement to the RTLWIFI driver that was in staging but now removed.

- In addition to the Realtek RTW88 driver, other networking additions including a new Mediatek driver, Intel Dynamic Device Personalization, and various optimizations to existing drivers.

- Long out-of-tree Daktronics driver code was merged.

- Better Logitech wireless device support.

- The U2F Zero driver was added for that libre hardware device offering two factor authentication and hardware random number generator features.

- Improved Thunderbolt support on older Apple systems.

Other Kernel Happenings:

- Various KVM improvements.

- The merging of the NULL TTY driver.

- Linux 5.2's live-patching support now makes use of a GCC9 compiler feature that might have minor performance implications.

- Progress towards enabling -Wimplicit-fallthrough.

- The new Fieldbus subsystem is added for industrial controls.

- The "mitigations=" kernel parameter controls though this was back-ported to current stable kernel series with the introduction of the MDS/Zombieload mitigations.

- Zstd-compressed perf records.

- Also new is a Generic Counters infrastructure.

- A last minute change now is faster vmalloc performance.

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Michael Larabel

Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via