Debian 9899 Published by

The first XanMod Linux Kernel based on the latest Linux Kernel 6.5 series has been released. XanMod is a general-purpose Linux kernel distribution with custom settings and new features. The real-time version is recommended for critical runtime applications such as Linux gaming eSports, streaming, live productions and ultra-low latency enthusiasts.

Linux 6.5.0-xanmod1

XanMod is a general-purpose Linux kernel distribution with custom settings and new features. Built to provide a stable, responsive and smooth desktop experience.

The real-time version is recommended for critical runtime applications such as Linux gaming eSports, streaming, live productions and ultra-low latency enthusiasts.

Supports all recent 64-bit versions of Debian and Ubuntu-based systems.

Main Features

  • Preemptive Full Tickless Kernel at 500Hz w/ Tuned CPU Core Scheduler.
  • RCU Boost for better responsiveness and lower overall system latency.
  • Block Layer w/ multi-threaded runqueue for high I/O throughput.
  • Caching, Virtual Memory Manager and CPUFreq Governor improvements.
  • BBR TCP Congestion Control + FQ-PIE Packet Scheduling and AQM Algorithm [5.8].
  • ORC Unwinder for Kernel Stack Traces (debuginfo) implementation.
  • Third-party patchset available: ZSTD kernel, initrd and modules support [5.8][5.6-rt], Full x86_64 FSGSBASE instructions [5.8], Clear Linux [partial], CK's Hrtimer Patchset [5.8][5.4], Wine / Proton Fsync, PCIe ACS Override, BMQ Process Scheduler [5.4 stock disabled], Aufs [5.4] and GCC graysky's.
  • Real-time Linux kernel (PREEMPT_RT) build available [5.6-rt][5.4-rt].
  • Generic kernel package for compatibility with most Debian & Ubuntu based distributions. Built on the latest GCC 10.2 and Binutils 2.35.
  • GPLv2 license. Can be built for any distribution or purpose.

Install via Terminal

echo 'deb releases main' | sudo tee /etc/apt/sources.list.d/xanmod-kernel.list && wget -qO - | sudo apt-key add -

Then update and install:

sudo apt update && sudo apt install linux-xanmod


Meta packages available: linux-xanmodlinux-xanmod-edgelinux-xanmod-ltslinux-xanmod-rt-edge and linux-xanmod-rt.

To try without adding the repository

Download from Sourceforge and install:

  1. In terminal:
    sudo dpkg -i linux-image-*xanmod*.deb linux-headers-*xanmod*.deb
  2. Reboot.
  • Check it:
    cat /proc/version
* linux-firmware-image package is optional

Linux 6.5.0-xanmod1

  • 7e62a96 Linux 6.5.0-xanmod1
  • b9a6506 HID: stadia: Add Stadia controller rumble support
  • d1675a6 sysctl: add sysctl to disallow unprivileged CLONE_NEWUSER by default
  • 2c063c8 wait: allow to use __wake_up_pollfree() from GPL modules
  • b5efd28 binder: give binder_alloc its own debug mask file
  • a49eb63 binder: turn into module
  • 17b505e winesync: Introduce the winesync driver and character device patchset
  • 8dcbd02 futex: Add entry point for FUTEX_WAIT_MULTIPLE (opcode 31)
  • f831214 mac80211: ignore AP power level when tx power type is "fixed"
  • aeb0821 netfilter: add xt_FLOWOFFLOAD target
  • a62c81c netfilter: Add netfilter nf_tables fullcone support
  • 32dac46 tcp: Add a sysctl to skip tcp collapse processing when the receive buffer is full
  • 3cb6d02 tcp: export TCPI_OPT_ECN_LOW in tcp_info tcpi_options field
  • c5cf539 net-tcp_bbr: v3: ensure ECN-enabled BBR flows set ECT on retransmits
  • bafcad4 net-tcp_bbr: v3: update TCP "bbr" congestion control module to BBRv3
  • 82481e1 tcp: introduce per-route feature RTAX_FEATURE_ECN_LOW
  • f66d1ea net-tcp_bbr: v2: introduce is_acking_tlp_retrans_seq into rate_sample
  • f6cd51f net-tcp_bbr: v2: inform CC module of losses repaired by TLP probe
  • a19ea1c net-tcp_bbr: v2: record app-limited status of TLP-repaired flight
  • 794e714 net-tcp: add fast_ack_mode=1: skip rwin check in tcp_fast_ack_mode__tcp_ack_snd_check()
  • ff47955 net-tcp: re-generalize TSO sizing in TCP CC module API
  • 2b988e0 net-tcp: add new ca opts flag TCP_CONG_WANTS_CE_EVENTS
  • 8f6b6ff net-tcp_bbr: v2: adjust skb tx.in_flight upon split in tcp_fragment()
  • 17f121b net-tcp_bbr: v2: adjust skb tx.in_flight upon merge in tcp_shifted_skb()
  • 85fc23c net-tcp_bbr: v2: introduce ca_ops->skb_marked_lost() CC module callback API
  • 7723ef1 net-tcp_bbr: v2: export FLAG_ECE in rate_sample.is_ece
  • c40583c net-tcp_bbr: v2: count packets lost over TCP rate sampling interval
  • caa879c net-tcp_bbr: v2: snapshot packets in flight at transmit time and pass in rate_sample
  • b11dd2c net-tcp_bbr: v2: shrink delivered_mstamp, first_tx_mstamp to u32 to free up 8 bytes
  • a6448e2 net-tcp_bbr: broaden app-limited rate sample detection
  • 8369142 drivers: initialize ata before graphics
  • abc18c3 locking: rwsem: spin faster
  • 21757cf firmware: Enable stateless firmware loading
  • 372e082 sched/wait: Do accept() in LIFO order for cache efficiency
  • 9521de9 x86/vdso: Use lfence instead of rep and nop
  • 7e8ad3c sched/fair: Introduce SIS_CURRENT to wake up short task on current CPU
  • 4b89197 sched/fair: Record the average duration of a task
  • 7dbe512 XANMOD: Makefile: Move ARM and x86 instruction set selection to kernel-wide build
  • 9371e0d x86/kconfig: more uarches for kernel 5.17+ [xm_rev2]
  • 94b33e3 XANMOD: scripts/setlocalversion: Move localversion* files to the end
  • 3fba11f XANMOD: scripts/setlocalversion: remove "+" tag for git repo short version
  • f0eaf53 XANMOD: Makefile: Disable GCC vectorization on trees
  • 81e8231 XANMOD: lib/kconfig.debug: disable default CONFIG_SYMBOLIC_ERRNAME and CONFIG_DEBUG_BUGVERBOSE
  • ed27bc9 XANMOD: cpufreq: tunes ondemand and conservative governor for performance
  • a892f83 XANMOD: sched/autogroup: Add kernel parameter and config option to enable/disable autogroup feature by default
  • c6d8d93 XANMOD: mm/vmscan: vm_swappiness = 30 decreases the amount of swapping
  • dda6e26 XANMOD: dcache: cache_pressure = 50 decreases the rate at which VFS caches are reclaimed
  • f6fd8ea XANMOD: kconfig: add 500Hz timer interrupt kernel config option
  • deef72c XANMOD: block: set rq_affinity to force full multithreading I/O requests
  • e833984 XANMOD: block/mq-deadline: Disable front_merges by default
  • 3bacece XANMOD: block/mq-deadline: Increase write priority to improve responsiveness
  • cd6af61 XANMOD: rcu: Change sched_setscheduler_nocheck() calls to SCHED_RR policy
  • fa91c8a XANMOD: sched/core: Add yield_type sysctl to reduce or disable sched_yield
  • 177464e XANMOD: fair: Set scheduler tunable latencies to unscaled
  • 5b5c0f4 XANMOD: fair: Increase wake-up granularity time to 3ms
  • 0154f71 XANMOD: fair: Remove all energy efficiency functions
  • 80b92a9 XANMOD: x86/build: Add more x86 code optimization flags
  • bf5f782 XANMOD: x86/build: Prevent generating avx2 and avx512 floating-point code
  • 2dde18c Linux 6.5


Download Linux 6.5.0-xanmod1 source from GitHub