Category Archives: Hacks

Kernel – 4.7-rc1 Breaks NVIDIA and VMware..

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Kernel 4.7-rc1 is out, and brief details are here:  https://lkml.org/lkml/2016/5/29/77 The update breaks the latest NVIDIA drivers – 367.18 and 361.45.11: ………. /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-367.18/kernel/nvidia-uvm/uvm_linux.h:557:13: error: redefinition of ‘radix_tree_empty’ static bool radix_tree_empty(struct radix_tree_root *tree) ……………………………. /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-367.18/kernel/nvidia-drm/nvidia-drm-gem.c: In function ‘nvidia_drm_dumb_map_offset’: /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-367.18/kernel/nvidia-drm/nvidia-drm-gem.c:411:33: error: passing argument 1 of ‘drm_gem_object_lookup’ from incompatible pointer type [-Werror=incompatible-pointer-types] gem = drm_gem_object_lookup(dev, file, handle); …………………… ..and, breaks … Continue reading →

ARM64 – Odroid C2 U-Boot – More Progress..

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Thanks to an additional U-Boot patch from Carlo Caione, it is now possible to (partially) boot the mainline Kernel from U-Boot on an eMMC module, as well as from SDcard..    Patch details here:  https://www.mail-archive.com/u-boot@lists.denx.de/msg213468.html => mmc info Device: <NULL> Manufacturer ID: 15 OEM: 100 Name: BGND3 Tran Speed: 52000000 Rd Block Len: 512 MMC version 5.0 High … Continue reading →

VMware – 12.1.1 – Not Very Impressed..

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VMware Workstation 12.1.1 is out, but still needs the same patches (vmmon and vmnet) for Kernel 4.6 as 12.1.0, and the update also (still..!.) breaks the front-end gui (/usr/bin/vmware) on Fedora 23.. Release Notes for 12.1.1 are here:  https://pubs.vmware.com/Release_Notes/en/workstation/12pro/workstation-1211-release-notes.html Kernel 4.6 patch details are here:  http://rglinuxtech.com/?p=1706 The fix for /usr/bin/vmware on Fedora 23 is almost the same … Continue reading →

ARM64 – Odroid C2 – U-Boot MMC Support..

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After the initial patches to provide basic U-Boot support for the C2, as mentioned in a previous article – there is now a further patch, to enable MMC support.    Details at https://www.mail-archive.com/u-boot@lists.denx.de/msg212503.html I have applied this additional patch, and for SDcard-based systems, it works: U-Boot 2016.05-rc3 (May 14 2016 – 21:06:28 -0700) odroid-c2 aarch64-linux-gnu-gcc (GCC) 5.3.1 20160212 … Continue reading →

ARM64 – Odroid C2 – U-Boot Boots..

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After some valuable info received from Brad (see comment on my earlier article, at http://rglinuxtech.com/?p=1723 ), I found the complete set of four patches for initial C2 U-Boot support, and applied these to the latest (May 9) GIT version of U-Boot..   Thanks are also due to Beniamino Galvani for producing these patches.. Detailed instruction on how to … Continue reading →

ARM64 – Odroid C2 U-Boot – Latest..

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I discovered there was a later version (6) of the U-boot patch for the Odroid C2, and also – after more research – found the reason for the compile error… It turns out that the GIT version (May 5, 2016) of U-boot currently needs two patches.. The first one is to provide psci_system_reset for armv8, and details … Continue reading →

ARM64 – Odroid C2 With Latest U-Boot and Kernel – Not Quite Yet..

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I decided to check the latest linux-next tree for signs of Odroid C2 code, and there is some there – apparently for basic functionality..     Compiled OK, but when I tried to boot it, the Hardkernel-supplied version of U-Boot crashed: odroidc2#ext4load mmc 0:1 ${loadaddr} /boot/uboot/Image 7748608 bytes read in 187 ms (39.5 MiB/s) odroidc2#ext4load mmc 0:1 ${dtb_loadaddr} /boot/uboot/meson-gxbb-odroidc2.dtb … Continue reading →

ARM64 – Pi3 Success – Almost..

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After more ‘investigation’, I managed to find a working U-Boot for a 64-bit boot of the Raspberry Pi 3, by copying it from the boot directory of this: http://www.tom-yam.or.jp/rpi3/rpi3-arm64-debian-20160414.img.xz found towards the end of the latest 64-bit thread on the Pi Forum: https://www.raspberrypi.org/forums/viewtopic.php?f=72&t=137963&sid=cd15abd8d4dd2a2d5c517f47a3e4f5e4&start=125 .  Thanks to xyinao for putting it all together.. I copied the kernel Image … Continue reading →

Kernel – 4.6-rc5 – OK with (Patched) VMware, and (Patched) NVIDIA..

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Kernel 4.6-rc5 is out, and brief details of changes from -rc4 are here: http://lkml.iu.edu/hypermail/linux/kernel/1604.3/00178.html Kernel 4.6 seems to have a habit of continuing later-rc breakages with VMware and NVIDIA, compared to previous kernel releases.. The VMware 12 fix for 4.6-rc4 (see http://rglinuxtech.com/?p=1706 ) still works OK with 4.6-rc5, but even the latest NVIDIA driver – 364.19 breaks … Continue reading →

ARM – Rock2 – Kernel 4.6-rc4 – MMC Swaparound – Bug or Feature?

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I had been running Kernel 4.6-rc2 on the Radxa Rock2 without any issues, and decided to update to recently-released Kernel 4.6-rc4.. Brief details of changes from -rc3 are here:  http://lkml.iu.edu/hypermail/linux/kernel/1604.2/00610.html The boot failed, and I then compiled/installed 4.6-rc3 to see if that would have been OK, and it was.. I then noticed something odd in the failed … Continue reading →