Debian 9973 Published by

A new XanMod Linux Kernel based on Linux Kernel 6.6.27 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 6.6.27-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


  • 4642d6e Linux 6.6.27-xanmod1
  • 2bfedab Revert "XANMOD: config: Change to voluntary preemption by default"
  • b922073 mm/vmscan: vm.workingset_protection: Update to linux6.6-le9uo-1.6
  • ef286ab Merge tag 'v6.6.27' into 6.6
  • 5e82800 Linux 6.6.27
  • 5c1dc51 drm: Check polling initialized before enabling in drm_helper_probe_single_connector_modes
  • 14ac934 Revert "drm/amd/amdgpu: Fix potential ioremap() memory leaks in amdgpu_device_init()"
  • 91fb03c VMCI: Fix possible memcpy() run-time warning in vmci_datagram_invoke_guest_handler()
  • b456cb9 net: mpls: error out if inner headers are not set
  • 83890a4 Bluetooth: btintel: Fixe build regression
  • ce64c26 platform/x86: intel-vbtn: Update tablet mode switch at end of probe
  • 300a2b9 randomize_kstack: Improve entropy diffusion
  • 41671f0 media: mediatek: vcodec: adding lock to protect encoder context list
  • 0a2dc70 media: mediatek: vcodec: adding lock to protect decoder context list
  • ec25fc3 media: mediatek: vcodec: Fix oops when HEVC init fails
  • a445eb1 selftests: mptcp: display simult in extra_msg
  • 9dff96b gcc-plugins/stackleak: Avoid .head.text section
  • 7365444 ALSA: hda/realtek: Add quirks for some Clevo laptops
  • 3d4b909 fbmon: prevent division by zero in fb_videomode_from_videomode()
  • 5e11bac drivers/nvme: Add quirks for device 126f:2262
  • 19e525e modpost: fix null pointer dereference
  • 21162ad io_uring: clear opcode specific data for an early failure
  • 89f0cf6 fbdev: viafb: fix typo in hw_bitblt_1 and hw_bitblt_2
  • 4cd44fd x86/xen: attempt to inflate the memory balloon on PVH
  • 9afc9fd ASoC: soc-core.c: Skip dummy codec when adding platforms
  • d009236 thermal/of: Assume polling-delay(-passive) 0 when absent
  • 6712b75 ASoC: amd: yc: Fix non-functional mic on ASUS M7600RE
  • fa5c8f2 usb: sl811-hcd: only defined function checkdone if QUIRK2 is defined
  • 55b724b usb: typec: tcpci: add generic tcpci fallback compatible
  • d8518f0 thunderbolt: Keep the domain powered when USB4 port is in redrive mode
  • 266f403 usb: typec: ucsi: Limit read size on v1.2
  • 0d52e18 usb: gadget: uvc: mark incomplete frames with UVC_STREAM_ERR
  • 4b1f991 kernfs: RCU protect kernfs_nodes and avoid kernfs_idr_lock in kernfs_find_and_get_node_by_id()
  • ac191bc bus: mhi: host: Add MHI_PM_SYS_ERR_FAIL state
  • bb72eb8 tools: iio: replace seekdir() in iio_generic_buffer
  • fb8579a ring-buffer: use READ_ONCE() to read cpu_buffer->commit_page in concurrent environment
  • 80f175d Input: xpad - add support for Snakebyte GAMEPADs
  • fd067c8 ktest: force $buildonly = 1 for 'make_warnings_file' test type
  • 6066887 ALSA: hda/realtek: Add quirk for Lenovo Yoga 9 14IMH9
  • 08aba12 perf/x86/amd/lbr: Discard erroneous branch entries
  • a9852cf platform/x86: touchscreen_dmi: Add an extra entry for a variant of the Chuwi Vi8 tablet
  • ed2f8b7 Input: allocate keycode for Display refresh rate toggle
  • dddc9f4 Input: imagis - use FIELD_GET where applicable
  • 2e90774 RDMA/cm: add timeout to cm_destroy_id wait
  • 5f7fd6a block: prevent division by zero in blk_rq_stat_sum()
  • 0662dea drivers/perf: hisi: Enable HiSilicon Erratum 162700402 quirk for HIP09
  • 44723bd input/touchscreen: imagis: Correct the maximum touch area value
  • d0e2f7a libperf evlist: Avoid out-of-bounds access
  • a822f30 Revert "ACPI: PM: Block ASUS B1400CEAE from suspend to idle by default"
  • 8466112 PCI: Disable D3cold on Asus B1400 PCI-NVMe bridge
  • 73bdf8d SUNRPC: increase size of rpc_wait_queue.qlen from unsigned short to unsigned int
  • 3d1b47e drm: Check output polling initialized before disabling
  • 09d4600 drm/amd/amdgpu: Fix potential ioremap() memory leaks in amdgpu_device_init()
  • 0f09e89 HID: input: avoid polling stylus battery on Chromebook Pompom
  • 30930f0 i2c: designware: Fix RX FIFO depth define on Wangxun 10Gb NIC
  • cd0a183 accel/habanalabs: increase HL_MAX_STR to 64 bytes to avoid warnings
  • 953fee8 drm/amd/display: Fix nanosec stat overflow
  • a5e7686 ext4: forbid commit inconsistent quota data when errors=remount-ro
  • 58546b2 ext4: add a hint for block bitmap corrupt state in mb_groups
  • bd6b1c4 ASoC: Intel: avs: Populate board selection with new I2S entries
  • f4a345e ALSA: firewire-lib: handle quirk to calculate payload quadlets as data block counter
  • cb94201 media: sta2x11: fix irq handler cast
  • 214a6c4 Julia Lawall reported this null pointer dereference, this should fix it.
  • 24e5e1e rcu-tasks: Repair RCU Tasks Trace quiescence check
  • 4d58c9f rcu/nocb: Fix WARN_ON_ONCE() in the rcu_nocb_bypass_lock()
  • f4b6cae ASoC: Intel: common: DMI remap for rebranded Intel NUC M15 (LAPRC710) laptops
  • d43a902 isofs: handle CDs with bad root inode but good Joliet root directory
  • 07a2aa6 scsi: lpfc: Fix possible memory leak in lpfc_rcv_padisc()
  • 89e8524 sysv: don't call sb_bread() with pointers_lock held
  • 56f5e36 pinctrl: renesas: checker: Limit cfg reg enum checks to provided IDs
  • 852ad6a drm/ttm: return ENOSPC from ttm_bo_mem_space v3
  • 02a3b0d ASoC: SOF: amd: Optimize quirk for Valve Galileo
  • f19ad40 drm: panel-orientation-quirks: Add quirk for GPD Win Mini
  • eafaec4 Input: synaptics-rmi4 - fail probing if memory allocation for "phys" fails
  • d6b2fe2 drm/vc4: don't check if plane->state->fb == state->fb
  • 8677a14 Bluetooth: Add new quirk for broken read key length on ATS2851
  • 6d0950c Bluetooth: btmtk: Add MODULE_FIRMWARE() for MT7922
  • ffdca0a Bluetooth: btintel: Fix null ptr deref in btintel_read_version
  • a2e6bff net/smc: reduce rtnl pressure in smc_pnet_create_pnetids_list()
  • c926393 ice: use relative VSI index for VFs instead of PF VSI number
  • c1363ed btrfs: send: handle path ref underflow in header iterate_inode_ref()
  • 30237d6 btrfs: export: handle invalid inode or root reference in btrfs_get_parent()
  • 0d23b34 btrfs: handle chunk tree lookup error in btrfs_relocate_sys_chunks()
  • 5d7a858 wifi: cfg80211: check A-MSDU format more carefully
  • 95eec16 wifi: iwlwifi: Add missing MODULE_FIRMWARE() for *.pnvm
  • 2618ab1 overflow: Allow non-type arg to type_max() and type_min()
  • 3ba4ace cpufreq: Don't unregister cpufreq cooling on CPU hotplug
  • 138fdea wifi: ath11k: decrease MHI channel buffer length to 8KB
  • 4031b72 dma-direct: Leak pages on dma_set_decrypted() failure
  • 9470114 net: pcs: xpcs: Return EINVAL in the internal methods
  • cf21eb6 tools/power x86_energy_perf_policy: Fix file leak in get_pkg_num()
  • ec72568 pstore/zone: Add a null pointer check to the psz_kmsg_read
  • a217b61 ACPI: x86: Move acpi_quirk_skip_serdev_enumeration() out of CONFIG_X86_ANDROID_TABLETS
  • 1feb6fc wifi: mt76: mt7996: add locking for accessing mapped registers
  • 1152c2c wifi: mt76: mt7996: disable AMSDU for non-data frames
  • 891fd07 wifi: mt76: mt7915: add locking for accessing mapped registers
  • c39e75f wifi: brcmfmac: Add DMI nvram filename quirk for ACEPC W5 Pro
  • 5dc5f8c firmware: tegra: bpmp: Return directly after a failed kzalloc() in get_filename()
  • 1b2b265 net: skbuff: add overflow debug check to pull/push helpers
  • b8dccb2 ionic: set adminq irq affinity
  • 9d3f959 pmdomain: imx8mp-blk-ctrl: imx8mp_blk: Add fdcc clock to hdmimix domain
  • ce666ce pmdomain: ti: Add a null pointer check to the omap_prm_domain_init
  • a7b862a net: add netdev_lockdep_set_classes() to virtual drivers
  • fc1d1ca arm64: dts: rockchip: fix rk3399 hdmi ports node
  • 5c014f0 arm64: dts: rockchip: fix rk3328 hdmi ports node
  • bb8ca34 ARM: dts: rockchip: fix rk322x hdmi ports node
  • c795042 ARM: dts: rockchip: fix rk3288 hdmi ports node
  • 3f0a747 cpuidle: Avoid potential overflow in integer multiplication
  • 750d446 panic: Flush kernel log buffer at the end
  • a2e14cc printk: For @suppress_panic_printk check for other CPU in panic
  • dbd3c05 wifi: iwlwifi: pcie: Add the PCI device id for new hardware
  • dae70a5 VMCI: Fix memcpy() run-time warning in dg_dispatch_as_host()
  • 0a6def0 wifi: rtw89: pci: enlarge RX DMA buffer to consider size of RX descriptor
  • 7a71f61 net: phy: phy_device: Prevent nullptr exceptions on ISR
  • 2485bee net: stmmac: dwmac-starfive: Add support for JH7100 SoC
  • 3dac6ab bnx2x: Fix firmware version string character counts
  • b34d64e wifi: rtw89: fix null pointer access when abort scan
  • 15df198 wifi: ath9k: fix LNA selection in ath_ant_try_scan()
  • 315eb3c amdkfd: use calloc instead of kzalloc to avoid integer overflow

Download Linux 6.6.27-xanmod1 source from GitHub