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How do I enable core dumps, persistently, in Big Sur. I am more versed in *nix/linux than macOS. I've had a few apps core dump, and see in the 'Console' that they are not permitted to create core files. I've tried 'ulimit -c unlimited' but this hasn't been perspective - perhaps in part as I'm unsure how to get this persistent for all apps (even outside a login shell) on Big Sur. Is there a simple guide to allowing core dumps ie into /cores as I was able to get that working in previous releases...

When using STP 126 on both Monterey beta 1 & Big Sur 11.4, a 'tab group' created in STP is not saved (ie if browser restarts it's gone), nor does it appear to be synced across to iOS or Safari 15 (either direction). There's no indication in the release notes this is intentional. Does anyone have even saving working, let alone sync? The tab groups are a wonderful idea - I played with them for a while on Monterey but need my main dev box on Big Sur for now, so was hoping STP would keep me happy :-) Also raised a feedback: FB9219350

I am getting regular kernel panics. I have a Kern*.panic file, and a .contents.panic These files now contain a 'macOSProcessedStackshotData' and so are encoded. I'm a dev, but not familiar with Apple Kernel debugging (though I've done this before on windows/aix/linux). How can I get some simple info from the panic, such as kernel backtrace, loaded drivers etc? Ideally I'm looking for a few points to specific drivers (maybe I can unplug a device) or situations I can avoid

With beta 1, I can go into settings->network->wifi->advanced & have a selectable option per network 'use iCloud Private Relay' I also have an ethernet adapter, Belkin USB-C LAN . If I selet this I see no options for private relay (nor under advanced) I guess it's not implemented for lan?

Hi, (note I've obfuscated the ping address - it was only an example url! but forums wouldn't let me post!) I have just switched to Zen -ie an Internet provider offering full dual stack IPv4/6 support, using a Fritzbox 7530 and am experiencing a delay , seemingly in name resolution, when using 'ping6'. The same configuration is also supporting iOS, windows, linux, raspberry pi - and these devices all seem to work fine. The symptom is: 'ping www DOT ibm DOT com' -> instant response, start getting icmp request/response ping6 'www DOT ibm DOT com' -> About a 3-4s delay after typing the command before the pings start ie: $ ping6 www DOT ibm DOT com ... delay here ... PING6(56=40+8+8 bytes) 2a02:8010:687f:0:2dbc:1ea2:a301:b111 --> 2a02:26f0:e8:491::b3a 16 bytes from 2a02:26f0:e8:491::b3a, icmp_seq=0 hlim=58 time=11.621 ms 16 bytes from 2a02:26f0:e8:491::b3a, icmp_seq=1 hlim=58 time=10.486 ms 16 bytes from 2a02:26f0:e8:491::b3a, icmp_seq=2 hlim=58 time=11.994 ms The same behaviour is seen for other IPv6 sites such as ipv6.google.com Using 'nslookup' I also get a delay: $ nslookup ... delay actually occurs here ipv6.google.com Server: 192.168.178.1 Address: 192.168.178.1#53 Non-authoritative answer: ipv6.google.com canonical name = ipv6.l.google.com. > That delay is almost as if it's reverse resolving itself - or a localhost issue? All the ipv6 testers I've tried in a browser suggest my IPv6 config is fine, sites reachable I don't notice delays in google chrome If IPv4 is disabled no delays occur The router is set to automatic IPv6 (with fast commit) The macOS Wifi adapter is set to automatic for ipv6 (and dhcp for ipv4) scutil --dns ends with DNS configuration (for scoped queries) resolver #1 search domain[0] : fritz.box nameserver[0] : 192.168.178.1 nameserver[1] : fd00::2e91:abff:fe55:2d26 if_index : 5 (en0) flags : Scoped, Request A records, Request AAAA records reach : 0x00020002 (Reachable,Directly Reachable Address) So ipv6 addresses are being requested /etc/hosts has # Host Database # localhost is used to configure the loopback interface when the system is booting. Do not change this entry. 0.0.1 localhost ::1 localhost fe80::1%lo0 localhost End of section .178.48 pi4 Any ideas why the delay? Once past that ipv6 and ipv4 are both working fine it seems (from limited tests so far)

I have a Macbook Pro, touchbar, 15", 2016 and continue to get frequent system panics, up to twice a day. This has continued through various software updates including right up to this weeks beta of 10.13.3.The symptom is that occasionally you may see the system panic screen, but more often you just notice touch can't be used for login, and apps take a while to get relaunched.Checking files in /Library/Logs/DiagnosticLogs/panic shows com.apple.kext.AMDRadeonX4100 as the most likely candidate in the backtraceI have tried changing pmset to have autopoweroff=0, hibernatemode=0 but the issue continues. It ONLY occurs when connected to an external monitor - both a USB-C native 4k, and a USB-C->DP 1080.My latest change is to try disabling auto graphics switching, though I'm not convinced as the discrete graphics is always used with an external display in any case.A full system reset is one option, but inconvenient & //should// be unnecessary.Any advices on getting more information? System traces? Is anyone else seeing these panics with the same, or different hardware?Or if you are using the same hardware and ARE NOT seeing this (with an external display) ?*** Panic Report *** panic(cpu 2 caller 0xffffff801c96f2f9): Kernel trap at 0xffffff7fa26aa3fe, type 14=page fault, registers: CR0: 0x000000008001003b, CR2: 0x0000000000000000, CR3: 0x000000001f341000, CR4: 0x00000000003627e0 RAX: 0xffffff7fa2a245a8, RBX: 0xffffff80431cb800, RCX: 0x0000000000000002, RDX: 0x0000000000000000 RSP: 0xffffff8206c13d80, RBP: 0xffffff8206c13da0, RSI: 0xffffff804c2aaf00, RDI: 0x0000000000000000 R8: 0x0000000000000000, R9: 0x0000000000000000, R10: 0x000017386722ad60, R11: 0x000017386722ad60 R12: 0xffffff80428f7480, R13: 0xffffff81ba08b090, R14: 0xffffff804c2aaf00, R15: 0xffffff7fa2792daa RFL: 0x0000000000010202, RIP: 0xffffff7fa26aa3fe, CS: 0x0000000000000008, SS: 0x0000000000000010 Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x2, PL: 0, VF: 1 Backtrace (CPU 2), Frame : Return Address 0xffffff8206c13830 : 0xffffff801c850606 0xffffff8206c13880 : 0xffffff801c97d614 0xffffff8206c138c0 : 0xffffff801c96f109 0xffffff8206c13940 : 0xffffff801c802120 0xffffff8206c13960 : 0xffffff801c85003c 0xffffff8206c13a90 : 0xffffff801c84fdbc 0xffffff8206c13af0 : 0xffffff801c96f2f9 0xffffff8206c13c70 : 0xffffff801c802120 0xffffff8206c13c90 : 0xffffff7fa26aa3fe 0xffffff8206c13da0 : 0xffffff7fa268b8ee 0xffffff8206c13e00 : 0xffffff7fa268ade5 0xffffff8206c13e30 : 0xffffff801ce96c2c 0xffffff8206c13ea0 : 0xffffff801ce96b56 0xffffff8206c13ed0 : 0xffffff801c889e84 0xffffff8206c13f40 : 0xffffff801c889975 0xffffff8206c13fa0 : 0xffffff801c8014f7 Kernel Extensions in backtrace: com.apple.kext.AMDRadeonX4100(1.6)[F38046D9-33A6-371F-8C74-C82410828F29]@0xffffff7fa2668000->0xffffff7fa2dd5fff dependency: com.apple.iokit.IOSurface(209.2.2)[AE58720D-7079-388F-AD95-FD2366F98F8D]@0xffffff7f9e965000 dependency: com.apple.iokit.IOPCIFamily(2.9)[8DDB836B-04F2-3509-A5F4-F2A593245B90]@0xffffff7f9d094000 dependency: com.apple.iokit.IOGraphicsFamily(517.22)[2AEA02BF-2A38-3674-A187-E5F610FD65B7]@0xffffff7f9e8d2000 dependency: com.apple.iokit.IOAcceleratorFamily2(376.6)[5F8F39B4-41AB-3263-9867-D0FAF9BBD2AE]@0xffffff7f9e97e000 BSD process name corresponding to current thread: kernel_task

Can anyone tell me what the default experiments are that are enabled after an install of build 44?I currently have all (except WebGPU - only as I'm chasing up a gfx issue) but am inclined to go more with the defaults unless there's a feature I need. I couldn't see how to reset the selected list to default?ThanksNigel Jones

I have a 2016 MBP 15 TB, and during the 10.13.2 betas, and indeed before I've had a number of system dumps.I no longer have the old logs to check, but over the last month I've had 11, and all apart from one have been in the Radeon driverI think they only occur when I am working at home, connected to an external LG UD2788 4k USB-C displayHere's part of the log. Anyone else seeing this?Thu Nov 30 11:03:01 2017 *** Panic Report *** panic(cpu 4 caller 0xffffff801bf6f2e9): Kernel trap at 0xffffff7fa1d073fe, type 14=page fault, registers: CR0: 0x000000008001003b, CR2: 0x0000000000000000, CR3: 0x000000001e944000, CR4: 0x00000000003627e0 RAX: 0xffffff7fa20815a8, RBX: 0xffffff8052f7e800, RCX: 0x0000000000000202, RDX: 0x0000000000000000 RSP: 0xffffff923c5abd80, RBP: 0xffffff923c5abda0, RSI: 0xffffff806b770f00, RDI: 0x0000000000000000 R8: 0x000000000000005c, R9: 0x0000000000000000, R10: 0x00002f00a1c6c261, R11: 0x0000000000000000 R12: 0xffffff804b53b900, R13: 0xffffff81b9810090, R14: 0xffffff806b770f00, R15: 0xffffff7fa1defdaa RFL: 0x0000000000010202, RIP: 0xffffff7fa1d073fe, CS: 0x0000000000000008, SS: 0x0000000000000000 Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x4, PL: 0, VF: 1 Backtrace (CPU 4), Frame : Return Address 0xffffff923c5ab830 : 0xffffff801be505f6 0xffffff923c5ab880 : 0xffffff801bf7d604 0xffffff923c5ab8c0 : 0xffffff801bf6f0f9 0xffffff923c5ab940 : 0xffffff801be02120 0xffffff923c5ab960 : 0xffffff801be5002c 0xffffff923c5aba90 : 0xffffff801be4fdac 0xffffff923c5abaf0 : 0xffffff801bf6f2e9 0xffffff923c5abc70 : 0xffffff801be02120 0xffffff923c5abc90 : 0xffffff7fa1d073fe 0xffffff923c5abda0 : 0xffffff7fa1ce88ee 0xffffff923c5abe00 : 0xffffff7fa1ce7de5 0xffffff923c5abe30 : 0xffffff801c49693c 0xffffff923c5abea0 : 0xffffff801c496866 0xffffff923c5abed0 : 0xffffff801be89e74 0xffffff923c5abf40 : 0xffffff801be89965 0xffffff923c5abfa0 : 0xffffff801be014f7 Kernel Extensions in backtrace: com.apple.kext.AMDRadeonX4100(1.6)[FD502021-1317-30C5-A5C9-A8EFFEF02650]@0xffffff7fa1cc5000->0xffffff7fa2432fff dependency: com.apple.iokit.IOSurface(209.2.2)[AE58720D-7079-388F-AD95-FD2366F98F8D]@0xffffff7f9df5c000 dependency: com.apple.iokit.IOPCIFamily(2.9)[A33FFDDC-DC1C-3B0E-B4AD-E6653EFFE2E9]@0xffffff7f9c694000 dependency: com.apple.iokit.IOGraphicsFamily(517.22)[2AEA02BF-2A38-3674-A187-E5F610FD65B7]@0xffffff7f9ded5000 dependency: com.apple.iokit.IOAcceleratorFamily2(376.6)[5F8F39B4-41AB-3263-9867-D0FAF9BBD2AE]@0xffffff7f9df75000 BSD process name corresponding to current thread: kernel_task Mac OS version: 17C83a Kernel version: Darwin Kernel Version 17.3.0: Thu Nov 9 18:14:16 PST 2017; root:xnu-4570.31.3~2/RELEASE_X86_64 Kernel UUID: E6B182D5-215F-39C1-87EB-1FD928CA04E2 Kernel slide: 0x000000001ba00000 Kernel text base: 0xffffff801bc00000 __HIB text base: 0xffffff801bb00000 System model name: MacBookPro13,3 (Mac-A5C67F76ED83108C) System uptime in nanoseconds: 51679762777184

This is a very unsupported environment question since Mac OS 10.13.2 came out in the last day or two and of course is entirely unsupported but no harm in asking or indeed informing others ;-)I am using AnyConnect 4.4.03034 - I can't change this as I am only an end user ;-)Whilst at 10.13.1 the vpn works fine, after the update it seems I just see in the GUI* Unable to contact <MY VPN NAME>* No network connectivity underneathThis happens with multiple profiles I have, whilst an alternate VPN I have access to, does work okFrom looking at system.log the best I can ascertain is that there may be an issue getting interface information ie:Nov 2 09:01:32 Nigels-MBP acvpnagent[55]: Function: getInterfacesInternal File: ../../vpn/Common/Utility/NetInterface_unix.cpp Line: 1754 Invoked Function:ioctl SIOCGIFNETMASK_IN6 Return Code: 1 (0x00000001) Description: unknown errno=Operation not permitted.. and a few lines in relation to retrieving my profile followed by:Nov 2 09:01:32 Nigels-MBP acvpnagent[55]: Function: getInterfacesInternal File: ../../vpn/Common/Utility/NetInterface_unix.cpp Line: 1754 Invoked Function: ioctl SIOCGIFNETMASK_IN6 Return Code: 1 (0x00000001) Description: unknown errno=Operation not permittedNov 2 09:01:32 Nigels-MBP acvpnagent[55]: Function: processConnectNotification File: ../../vpn/Agent/MainThread.cpp Line: 12277 Invoked Function: CMainThread::resolveSGHost Return Code: -32702438 (0xFE0D001A) Description: MAINTHREAD_ERROR_NO_NETWORK_CONNECTIVITYAny tips for workarounds welcome. I presume perhaps a permission change? Or an outright MacOS bug in the beta.

I've had a new macbook pro 15 touchbar, 16GB/512GB for about a week. As a seasoned developer I installed high sierra (and have updated since, including this weeks update). I have other machines I can use. I'm new to macOS, but experienced in *nix.I'm currently working on an Apache OpenSource project (Atlas) which is java based + maven.I was on a conference call today using zoom.us, with the system connected via USB-C to a 4K display. keyboard/mouse was bluetooth. Internal webcam was in use, and the meeting had about 16 participants, 6 on video.During the call I decided to download a patch & rebuild the source code - resulting in, as expected, high CPU & high I/O. After a few minutes I noticed the compile seemed to hang, as did the zoom video. The zoom audio continued. The clock stopped. I couldn't raise/lower any windows & noticed the cursor was the "text insert" cursor. I couldn't use the menu to get to force quit, nor cmd-option-ESC. Fans continue to run fairly heavily suggesting perhaps the system has got into some UI or kernel loop... though after another 10 mins or so slowed down with no change to the UI.Any ideas?