| There is one additional problem with this under High Sierra, and it’s a biggie. The kext blocks avarice from connecting as hidapi cannot enumerate the device. This can also be seen running hidtest which is part of hidapi. Uninstalling the kext seems to need a reboot, and then avrdude no longer works, but avarice does. I am not skilled enough in things around hidapi to figure out a solution, but can anyone give me a hint as to if it is even possible to solve? Br, Philip
Managed to get it working. I used kext Wizard to install it ( http://wizards.osxlatitude.com/kext/kw.zip). Kext Wizard installed it into /System/Library/Extensions and there it works fine. If I move the installed kext back into /Library/Extensions it no longer works, move it back to /System/Library/Extensions, it’s fine. On 24. Dec 2017, at 23:33, Bittrace14 <address@hidden> wrote:
(hope this is the correct place to post this, apologies if not)
I am trying to use AVRDude on OSX High Sierra 10.31.2 (17C88) with an AtmelICE.
I have downloaded the latest, signed kext from (http://download.savannah.gnu.org/releases/avrdude/AtmelICE-kext-for-High-Sierra.zip) and done the following:
Unzipped the ZIP, copied the kext to /Library/Extensions.
sudo kextload /Library/Extensions/AtmelICE.kext
Under "Security & Privacy”I have allowed “Nicholas Sayer”
Re-executed sudo kextload /Library/Extensions/AtmelICE.kext
I get this:
/Library/Extensions/AtmelICE.kext failed to load - (libkern/kext) authentication failure (file ownership/permissions); check the system/kernel logs for errors or try kextutil(8).
I have tried various things like sudo chown -R root:wheel /Library/Extensions/AtmelICE.kext and sudo kextcache -system-caches
all to no effect.
When I try sudo kextutil /Library/Extensions/AtmelICE.kext,
I get this:
Kext rejected due to improper filesystem permissions: <OSKext 0x7fb5b6285a20 [0x7fff8be08980]> { URL = ""file:///Library/StagedExtensions/Library/Extensions/AtmelICE.kext/" class="">file:///Library/StagedExtensions/Library/Extensions/AtmelICE.kext/", ID = "com.kfu.AtmelICE" }
Diagnostics for /Library/Extensions/AtmelICE.kext:
Authentication Failures:
File owner/permissions are incorrect (must be root:wheel, nonwritable by group/other):
/Library/StagedExtensions/Library/Extensions/AtmelICE.kext
Contents
_CodeSignature
CodeResources
CodeDirectory
CodeRequirements-1
CodeSignature
CodeRequirements
Info.plist
Warnings:
Personality CFBundleIdentifier differs from containing kext's (not necessarily a mistake, but rarely done):
AtmelICE
Kext has no executable or compatible version, so it should not declare any OSBundleLibraries.
When I check the permissions of the AtmelICE.kext, I see that they appear identical to those of other kexts that load fine.
Anyone got any suggestions?
Br,
Philip
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