A new XanMod Linux Kernel based on the latest Linux Kernel 5.12.11 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.

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  http://deb.xanmod.org releases main' | sudo tee /etc/apt/sources.list.d/xanmod-kernel.list && wget -qO -  https://dl.xanmod.org/gpg.key | sudo apt-key add -

Then update and install:

sudo apt update && sudo apt install linux-xanmod

Reboot.

Meta packages available: linux-xanmod, linux-xanmod-edge, linux-xanmod-lts, linux-xanmod-rt-edge and linux-xanmod-rt.

To try without adding the repository

Download from Sourceforge and install:
https://sourceforge.net/projects/xanmod/files/

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 5.12.11-xanmod1

• bd9cb29 Linux 5.12.11-xanmod1
• 19797d2 Merge tag 'v5.12.11' into 5.12
• d7f82a4 Linux 5.12.11
• 9be4a3e proc: only require mm_struct for writing
• 3483123 scsi: core: Only put parent device if host state differs from SHOST_CREATED
• c446ec4 scsi: core: Put .shost_dev in failure path if host state changes to RUNNING
• 4aaa0d8 scsi: core: Fix failure handling of scsi_add_host_with_dma()
• 45d83db scsi: core: Fix error handling of scsi_host_alloc()
• 2431180 NFSv4: nfs4_proc_set_acl needs to restore NFS_CAP_UIDGID_NOMAP on error.
• 64c21cd NFSv4: Fix second deadlock in nfs4_evict_inode()
• 72651c6 NFS: Fix use-after-free in nfs4_init_client()
• 13f3c16 kvm: fix previous commit for 32-bit builds
• 1e3f498 perf session: Correct buffer copying when peeking events
• ff7b80b pinctrl: qcom: Make it possible to select SC8180x TLMM
• dc3406d NFSv4: Fix deadlock between nfs4_evict_inode() and nfs4_opendata_get_inode()
• 58ddf61 NFS: Fix a potential NULL dereference in nfs_get_client()
• 3e670c5 IB/mlx5: Fix initializing CQ fragments buffer
• 9fb088c KVM: x86: Ensure liveliness of nested VM-Enter fail tracepoint message
• 22cf65b x86/nmi_watchdog: Fix old-style NMI watchdog regression on old Intel CPUs
• 63345c0 platform/surface: aggregator: Fix event disable function
• 322fd1c sched/fair: Fix util_est UTIL_AVG_UNCHANGED handling
• 996c241 ASoC: SOF: reset enabled_cores state at suspend
• 5e3fb56 sched/fair: Make sure to update tg contrib for blocked load
• 2481ecc sched/fair: Keep load_avg and load_sum synced
• 20d396b dt-bindings: connector: Replace BIT macro with generic bit ops
• df4c7e3 perf: Fix data race between pin_count increment/decrement
• 5138f8d perf/x86/intel/uncore: Fix a kernel WARNING triggered by maxcpus=1
• 9f6025f pinctrl: qcom: Fix duplication in gpio_groups
• dd55331 gpio: wcd934x: Fix shift-out-of-bounds error
• 7307a2d phy: ti: Fix an error code in wiz_probe()
• 37d144c ASoC: meson: gx-card: fix sound-dai dt schema
• 047fd16 ASoC: core: Fix Null-point-dereference in fmt_single_name()
• 02b07dd phy: cadence: Sierra: Fix error return code in cdns_sierra_phy_probe()
• 8c87830 tools/bootconfig: Fix error return code in apply_xbc()
• 05471eb vmlinux.lds.h: Avoid orphan section with !SMP
• d37fa2a ARM: cpuidle: Avoid orphan section warning
• 8dc1b0e RDMA: Verify port when creating flow rule
• fdeb9f8 RDMA/mlx5: Block FDB rules when not in switchdev mode
• 73b2733 RDMA/mlx4: Do not map the core_clock page to user space unless enabled
• 98b6c67 RDMA/mlx5: Use different doorbell memory for different processes
• 0a672f7 RDMA/ipoib: Fix warning caused by destroying non-initial netns
• 1ed3c16 hwmon: (tps23861) correct shunt LSB values
• 7ee186a hwmon: (tps23861) set current shunt value
• c1723ce hwmon: (tps23861) define regmap max register
• e3b478d hwmon: (corsair-psu) fix suspend behavior
• 0c010ea drm/msm/a6xx: avoid shadow NULL reference in failure path
• 868fb39 drm/msm/a6xx: update/fix CP_PROTECT initialization
• 1071073 drm/msm/a6xx: fix incorrectly set uavflagprd_inv field for A650
• b6ed987 drm/mcde: Fix off by 10^3 in calculation
• 95aadff usb: typec: mux: Fix copy-paste mistake in typec_mux_match
• 0908fb0 usb: typec: tcpm: Fix misuses of AMS invocation
• aad940c usb: typec: tcpm: Correct the responses in SVDM Version 2.0 DFP
• 63784c4 usb: dwc3: gadget: Disable gadget IRQ during pullup disable
• ed57e68 usb: cdns3: Enable TDL_CHK only for OUT ep
• 9a80147 phy: usb: Fix misuse of IS_ENABLED
• b7611c3 regulator: rtmv20: Fix .set_current_limit/.get_current_limit callbacks
• 131503c regulator: atc260x: Fix n_voltages and min_sel for pickable linear ranges
• 4c44559 regulator: bd71828: Fix .n_voltages settings
• 9f61978 regulator: scmi: Fix off-by-one for linear regulators .n_voltages setting
• 30db23b regulator: fixed: Ensure enable_counter is correct if reg_domain_disable fails
• b4b7438 regulator: fan53880: Fix missing n_voltages setting
• f52a932 regulator: da9121: Return REGULATOR_MODE_INVALID for invalid mode
• 76d8e9b regulator: bd718x7: Fix the BUCK7 voltage setting on BD71837
• 0d36883 regulator: max77620: Use device_set_of_node_from_dev()
• b0dd9b3 regulator: core: resolve supply for boot-on/always-on regulators
• b83c739 usb: typec: tcpm: Do not finish VDM AMS for retrying Responses
• cd32d4e usb: typec: tcpm: cancel frs hrtimer when unregister tcpm port
• d0a0669 usb: typec: tcpm: cancel vdm and state machine hrtimer when unregister tcpm port
• b2d5b31 usb: typec: tcpm: Properly handle Alert and Status Messages
• ca6bc27 usb: fix various gadget panics on 10gbps cabling
• f17aae7 usb: fix various gadgets null ptr deref on 10gbps cabling.
• 0ee582b usb: gadget: eem: fix wrong eem header operation
• ae746b6 usb: cdnsp: Fix deadlock issue in cdnsp_thread_irq_handler
• 04e24bd USB: serial: cp210x: fix CP2102N-A01 modem control
• 802fcbd USB: serial: cp210x: fix alternate function for CP2102N QFN20
• 0337fee USB: serial: quatech2: fix control-request directions
• db5cd62 USB: serial: omninet: add device id for Zyxel Omni 56K Plus
• ae923b0 USB: serial: ftdi_sio: add NovaTech OrionMX product ID
• 3d47267 usb: gadget: f_fs: Ensure io_completion_wq is idle during unbind
• cad7ce2 usb: typec: intel_pmc_mux: Add missed error check for devm_ioremap_resource()
• 49d9e9e usb: typec: intel_pmc_mux: Put fwnode in error case during ->probe()
• 02cd2a5 usb: typec: ucsi: Clear PPM capability data in ucsi_init() error path
• 733101e usb: typec: wcove: Use LE to CPU conversion when accessing msg->header
• b9f8edb usb: musb: fix MUSB_QUIRK_B_DISCONNECT_99 handling
• cb65ff0 usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
• 7887557 usb: dwc3: ep0: fix NULL pointer exception
• 4aad390 usb: dwc3: gadget: Bail from dwc3_gadget_exit() if dwc->gadget is NULL
• 2bdf746 usb: dwc3: meson-g12a: Disable the regulator in the error handling path of the probe
• d8dd375 usb: dwc3-meson-g12a: fix usb2 PHY glue init when phy0 is disabled
• 9015140 usb: pd: Set PD_T_SINK_WAIT_CAP to 310ms
• 8ceb322 usb: f_ncm: only first packet of aggregate needs to start timer
• 9e5f198 USB: f_ncm: ncm_bitrate (speed) is unsigned
• da7ed08 mmc: renesas_sdhi: Fix HS400 on R-Car M3-W+
• 800ad91 mmc: renesas_sdhi: abort tuning when timeout detected
• a209728 tools/bootconfig: Fix a build error accroding to undefined fallthrough
• b16a249 tracing: Correct the length check which causes memory corruption
• 3e4ddeb ftrace: Do not blindly read the ip address in ftrace_bug()
• 2145c61 cgroup1: don't allow '\n' in renaming
• ac62404 coredump: Limit what can interrupt coredumps
• 7253a49 btrfs: promote debugging asserts to full-fledged checks in validate_super
• 2818ecb btrfs: return value from btrfs_mark_extent_written() in case of error
• d7c3101 btrfs: zoned: fix zone number to sector/physical calculation
• fb58673 btrfs: do not write supers if we have an fs error
• 2c9809a async_xor: check src_offs is not NULL before updating it
• 555002a bcache: avoid oversized read request in cache missing code path
• 7550b63 bcache: remove bcache device self-defined readahead
• 616126b tick/nohz: Only check for RCU deferred wakeup on user/guest entry when needed
• c597d5c bus: mhi: pci_generic: Fix possible use-after-free in mhi_pci_remove()
• 0bb28bc misc: rtsx: separate aspm mode into MODE_REG and MODE_CFG
• 2147684 usb: misc: brcmstb-usb-pinmap: check return value after calling platform_get_resource()
• f44f1fc staging: rtl8723bs: Fix uninitialized variables
• ed0e2a8 kvm: avoid speculation-based attacks from out-of-range memslot accesses
• 7707f72 KVM: X86: MMU: Use the correct inherited permissions to get shadow page
• 1f297c5 KVM: x86: Unload MMU on guest TLB flush if TDP disabled to force MMU sync
• 82cc1c4 perf/x86/intel/uncore: Fix M2M event umask for Ice Lake server
• 8c9987a x86, lto: Pass -stack-alignment only on LLD < 13.0.0
• dfedcac drm: Lock pointer access in drm_master_release()
• f773f8c drm: Fix use-after-free read in drm_getunique()
• 135076c ACPI: Pass the same capabilities to the _OSC regardless of the query flag
• 6192af0 Revert "ACPI: sleep: Put the FACS table after using it"
• 01415ff spi: bcm2835: Fix out-of-bounds access with more than 4 slaves
• b788678 ALSA: hda/realtek: fix mute/micmute LEDs for HP ZBook Power G8
• e0173c3 ALSA: hda/realtek: fix mute/micmute LEDs for HP EliteBook 840 Aero G8
• 3513eda ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP EliteBook x360 1040 G8
• b5a06c7 ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Elite Dragonfly G2
• a2901ac ALSA: hda/realtek: headphone and mic don't work on an Acer laptop
• 05e4def ALSA: firewire-lib: fix the context to call snd_pcm_stop_xrun()
• 536a764 ALSA: seq: Fix race of snd_seq_timer_open()
• 9f573a7 i2c: mpc: implement erratum A-004447 workaround
• a08e677 i2c: mpc: Make use of i2c_recover_bus()
• 1cbb5b9 spi: Cleanup on failure of initial setup
• a3576a4 spi: Don't have controller clean up spi device before driver unbind
• 4d5773d powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
• a808954 powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
• 983b526 nvmet: fix false keep-alive timeout when a controller is torn down
• c4082a9 nvme-tcp: remove incorrect Kconfig dep in BLK_DEV_NVME
• 8086763 bnx2x: Fix missing error code in bnx2x_iov_init_one()
• fb429fa dm verity: fix require_signatures module_param permissions
• 3a0753c bpf, selftests: Adjust few selftest result_unpriv outcomes
• 050a7e2 MIPS: Fix kernel hang under FUNCTION_GRAPH_TRACER and PREEMPT_TRACER
• 268323c nvme-fabrics: decode host pathing error for connect
• 3dc1e20 Makefile: LTO: have linker check -Wframe-larger-than
• 0f34aff net: dsa: microchip: enable phy errata workaround on 9567
• 42e7fa0 net: appletalk: cops: Fix data race in cops_probe1
• 1f66d0d net: macb: ensure the device is available before accessing GEMGXL control registers
• 817a9bb scsi: target: qla2xxx: Wait for stop_phase1 at WWN removal
• b392e2f scsi: hisi_sas: Drop free_irq() of devm_request_irq() allocated irq
• 87bf5d1 scsi: vmw_pvscsi: Set correct residual data length
• e573390 scsi: bnx2fc: Return failure if io_req is already in ABTS processing
• 81c4d1d net:sfc: fix non-freed irq in legacy irq mode
• 495d051 RDS tcp loopback connection can hang
• 2ed296c net/qla3xxx: fix schedule while atomic in ql_sem_spinlock
• 8b30908 wq: handle VM suspension in stall detection
• ac91f6b cgroup: disable controllers at parse time
• a244250 net: mdiobus: get rid of a BUG_ON()
• 76cc8e0 netlink: disable IRQs for netlink_lock_table()
• cf3f90b bonding: init notify_work earlier to avoid uninitialized use
• 6249193 isdn: mISDN: netjet: Fix crash in nj_probe:
• 0a42b3f usb: chipidea: udc: assign interrupt number to USB gadget structure
• cec6430 spi: sprd: Add missing MODULE_DEVICE_TABLE
• 51bd6bf ASoC: sti-sas: add missing MODULE_DEVICE_TABLE
• 320b3e0 vfio-ccw: Serialize FSM IDLE state with I/O completion
• 50360f4 vfio-ccw: Reset FSM state to IDLE inside FSM
• f5e770c bpf: Add deny list of btf ids check for tracing programs
• d573fd0 ASoC: Intel: bytcr_rt5640: Add quirk for the Lenovo Miix 3-830 tablet
• 903491d ASoC: Intel: bytcr_rt5640: Add quirk for the Glavey TM800A550L tablet
• 9f1bab3 usb: cdns3: Fix runtime PM imbalance on error
• 90d0a3c net/nfc/rawsock.c: fix a permission check bug
• abcc543 ASoC: codecs: lpass-tx-macro: add missing MODULE_DEVICE_TABLE
• 4cacae8 ASoC: codecs: lpass-rx-macro: add missing MODULE_DEVICE_TABLE
• 2b9cceb bpf: Forbid trampoline attach for functions with variable arguments
• cbdf358 spi: spi-zynq-qspi: Fix stack violation bug
• e92ac92 spi: Fix spi device unregister flow
• 9911e50 ASoC: amd: fix for pcm_read() error
• 8b6fb11 ASoC: max98088: fix ni clock divider calculation
• 35b9a92 proc: Track /proc/$pid/attr/ opener mm_struct

Homepage
Download Linux 5.12.11-xanmod1 source from GitHub