Category Archives: Hacks

Kernel – 5.14-rc1 – OK with Patched VMware, Breaks NVIDIA..

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Kernel 5.14-rc1 has been released, and brief details are here:   http://lkml.iu.edu/hypermail/linux/kernel/2107.1/02943.html The latest VMware 16.1.2 patch includes a fix for 5.14-rc, and compiles and runs OK (tested with 5.14-rc1).   Find it at:  https://github.com/mkubecek/vmware-host-modules/tree/workstation-16.1.2 NVIDIA 470.42.01 compile failed: …………. /home/rgadsdon/NVIDIA-Linux-x86_64-470.42.01/kernel/common/inc/nv-time.h: In function ‘nv_sleep_ms’: /home/rgadsdon/NVIDIA-Linux-x86_64-470.42.01/kernel/common/inc/nv-time.h:217:18: error: ‘struct task_struct’ has no member named ‘state’; did you mean ‘__state’? 217 | … Continue reading →

ARM64 – Pi 4 USB Problems – And a Messy Fix..

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After some delay, I finally had a ‘good’ cooling solution for my 8GB Pi4, and resumed testing.. The last Kernel version I had running on it was 5.9-rc4, and everything seemed to be working OK (including 8GB of memory recognised). I then updated to 5.11.18, and found that none of the USB ports worked: # dmesg |grep … Continue reading →

NVIDIA – New Driver 460.32.03 – Patch Mod for 5.11..

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NVIDIA have released their latest driver – 460.32.03, and details are here: https://forums.developer.nvidia.com/t/linux-solaris-and-freebsd-driver-460-32-03-long-lived-branch-release/165423 The patch for 460.27.04 is easy to modify to work with this version – just remove the first section (patch to ~/kernel/common/inc/nv-linux.h) as this is no longer necessary. Tested with Kernel 5.11-rc2.. ……….. ld -r -o /home/rgadsdon/NVIDIA-Linux-x86_64-460.32.03/kernel/nvidia-modeset/nv-modeset-interface.o /home/rgadsdon/NVIDIA-Linux-x86_64-460.32.03/kernel/nvidia-modeset/nvidia-modeset-linux.o /home/rgadsdon/NVIDIA-Linux-x86_64-460.32.03/kernel/nvidia-modeset/nv-kthread-q.o MODPOST /home/rgadsdon/NVIDIA-Linux-x86_64-460.32.03/kernel/Module.symvers CC [M] /home/rgadsdon/NVIDIA-Linux-x86_64-460.32.03/kernel/nvidia-drm.mod.o … Continue reading →

ARM – Vim3-Pro – with EFI and Fedora 33..

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Recently acquired one of the Khadas VIM3-Pro arm64 SoCs, and was impressed with the level of documentation available.. Unfortunately – as is so often the case – this was all relentlessly Ubuntu-focussed, with a semi-proprietary kernel based on the 4.X kernel tree.. At least the U-Boot version was fairly recent, and appeared to support EFI etc.. The … Continue reading →

Kernel – 5.9-rc6 – Rare Compile Fail!

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Kernel 5.9-rc6 has been released, and brief details are here:  http://lkml.iu.edu/hypermail/linux/kernel/2009.2/05870.html In a very rare occurrence, the kernel compile actually fails: …………………………….. CALL scripts/checksyscalls.sh CALL scripts/atomic/check-atomics.sh DESCEND objtool CHK include/generated/compile.h CC drivers/dax/super.o drivers/dax/super.c:325:6: error: redefinition of ‘dax_supported’ 325 | bool dax_supported(struct dax_device *dax_dev, struct block_device *bdev, | ^~~~~~~~~~~~~ In file included from drivers/dax/super.c:16: ./include/linux/dax.h:162:20: note: previous definition … Continue reading →

Fedora – Fun with ZRAM..

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Fedora 33 will be using ZRAM as standard for swap, rather than a partition or swapfile on disk.    I had no problem with this on a new F33 install (Odroid H2Plus) but after upgrading an existing Fedora 32 system it refused to initialise, and ‘/dev/zram0‘ did not exist.    Research revealed that the documentation for much of this … Continue reading →

Kernel – 5.9-rc2 – NVIDIA Patches, Kernel Taint, and Wait for VMware 16..

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Kernel 5.9-rc2 is out, and brief details of changes since -rc1 are here: http://lkml.iu.edu/hypermail/linux/kernel/2008.2/10710.html The patched VMware 16 prerelease versions of vmmon and vmnet compile OK, but any further tests will have to wait until the release of Workstation 16 in about a months time.. NVIDIA 450.66 can be made to (almost..) work, by applying the 5.9 … Continue reading →

Kernel – 5.9-rc – Preliminary Testing – Breaks VMware and NVIDIA, and VirtualBox..

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After all the excitement around the release of Kernel 5.8, I ran some tests on the work-in-progress git version (August 9th) of Kernel 5.9-rc1.   Obviously, there are more changes to come before RC1 is actually released.. NVIDIA 450.57 compile fails: ……………………. CC [M] /home/rgadsdon/NVIDIA-Linux-x86_64-450.57/kernel/nvidia-uvm/nv-kthread-q.o CC [M] /home/rgadsdon/NVIDIA-Linux-x86_64-450.57/kernel/nvidia-uvm/nv-kthread-q-selftest.o CC [M] /home/rgadsdon/NVIDIA-Linux-x86_64-450.57/kernel/nvidia-uvm/uvm8.o In file included from /home/rgadsdon/NVIDIA-Linux-x86_64-450.57/kernel/nvidia-uvm/uvm8.c:31: /home/rgadsdon/NVIDIA-Linux-x86_64-450.57/kernel/nvidia-uvm/uvm8_va_range.h: In … Continue reading →

VirtualBox – Latest Development Version Tests with Kernel 5.8 – Unstable..

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I have been investigating alternatives, as VMware is currently a non-starter (literally..) with Kernel 5.8.. I installed the latest VirtualBox (6.1.97 r139689) from SVN (another blast from the past…) and managed – after some messing around – to get it to compile OK on my Fedora 32 test system with Kernel 5.8 (from kernel.org..)    I had … Continue reading →