Overview

My MacBook Pro M5 running MacOS Tahoe 26.3 beta fails to detect two identical ASUS ROG Swift OLED PG32UCDM monitors simultaneously. Only one display is recognized at a time. One potential root cause might be that both monitors report identical binary EDID serial numbers (0x01010101), and the MacBook Pro M5 appears to use this value exclusively for display identity rather than combining it with other more detailed information (e.g., port, or alphanumeric serial number). I've verified that the monitor EDID binary serial numbers are in fact identical -- however the alphanumerical serial numbers are not identical. NOTE: This behavior is specific to the MacBook Pro M5 — when connecting both monitors via usb-c to a Mac Mini M4 Pro running the same MacOS Tahoe 26.3 beta, the monitors work fine. The OS detects both and assigns different names to them (PG32UCDM (1) and PG32UCDM (2)). NOTE: I could be wrong about this root cause, I don't have a way to disprove it, though the fact the monitors work fine on a Mac Mini is suspicious. What I have tried: Connecting the two monitors using different monitor ports (one on DisplayPort, another on HDMI, etc.), and different MacBook ports (one on HDMI, another on USB-C, etc.) Bumping down the resolution on the monitors to "1920x1080 (low resolution)" and 30Hz to rule out bandwidth issues. Connecting one, or both, monitors to CalDigit TS5 Plus dock. Neither alternate configuration yields the device recognizing both screens. Using BetterDisplay to import a manually-edited EDID for the screen, with a different binary EDID value, manufacturer name, etc. I've also verified that if I plug in my Apple Studio Display as one of the monitors, then the MacBook recognizes both one of the PG32UCDM monitors and the Studio Display at the same time. The issue seems to occur only when both monitors plugged into it are the same PG32UCDM model. When I have both monitors plugged into my MacBook, each time I disconnect the cable to whichever monitor is currently recognized, it immediately recognizes the other monitor. Plugging the cable for the disconnected monitor back in has no effect. I'm at a loss. Has anyone run into this issue and found a successful workaround that is not one of the approaches I've described above?

There is a problem with the launchscreen of my application on iPadOS 26. After release of the windowed mode feature the launchscreen of my fullscreen landscape-only application is being cropped and doesn't stretch to screen's size when the device is in the portrait mode. How can I fix this?

Expected Behavior: Display the digit “6”. Actual Behavior: The rendered character appears as a composite glyph—the left half resembles “9” and the right half resembles “6”, resulting in a malformed digit. other examples： Environment & Characteristics: Occurs intermittently on iPhone 15 Pro Max and iPhone 16 Pro Max. Reproducible within the Taobao App, specifically in WKWebView. Font Used: AlibabaSans102_v1_TaoBao-Bd.ttf

When using the Password AutoFill feature, after entering a password and navigating to another page, a system prompt appears asking whether to save the password to the keychain (as shown in the figure). If this prompt is not dismissed and the app is moved to the background, then brought back to the foreground, the prompt automatically disappears. However, after this occurs, all input fields within the app become unresponsive to keyboard input—no keyboard will appear when tapping any text field. The only way to restore keyboard functionality is to force-quit the app and relaunch it. How can this issue be resolved?

When using the [AVAudioSession setCategory:withOptions:error:] API, the call hangs for a long time and eventually returns an error.This issue occurs on iOS 16, and did not appear in earlier versions. Thread 135: 0 libsystem_kernel.dylib 0x00000002478e3cd4 _mach_msg2_trap :8 (in libsystem_kernel.dylib) 1 libsystem_kernel.dylib 0x00000002478e7214 _mach_msg_overwrite :428 (in libsystem_kernel.dylib) 2 libsystem_kernel.dylib 0x00000002478e705c _mach_msg :24 (in libsystem_kernel.dylib) 3 libdispatch.dylib 0x00000001d63ffe84 __dispatch_mach_send_and_wait_for_reply :548 (in libdispatch.dylib) 4 libdispatch.dylib 0x00000001d6400224 _dispatch_mach_send_with_result_and_wait_for_reply :60 (in libdispatch.dylib) 5 libxpc.dylib 0x00000001b2114e04 _xpc_connection_send_message_with_reply_sync :256 (in libxpc.dylib) 6 Foundation 0x000000019b6249f0 ___NSXPCCONNECTION_IS_WAITING_FOR_A_SYNCHRONOUS_REPLY__ :16 (in Foundation) 7 Foundation 0x000000019c06d1b4 -[NSXPCConnection _sendInvocation:orArguments:count:methodSignature:selector:withProxy:] :2100 (in Foundation) 8 CoreFoundation 0x000000019dfcb1cc ____forwarding___ :1072 (in CoreFoundation) 9 CoreFoundation 0x000000019dfd3200 ___forwarding_prep_0___ :96 (in CoreFoundation) 10 AudioSession 0x00000001c77498b0 __ZN4avas6client11SessionCore10HandlePingEv :192 (in AudioSession) 11 AudioSession 0x00000001c77497b0 ____ZN4avas6client11SessionCore12DispatchPingEv_block_invoke :52 (in AudioSession) 12 libdispatch.dylib 0x00000001d63e4adc __dispatch_call_block_and_release :32 (in libdispatch.dylib) 13 libdispatch.dylib 0x00000001d63fe7ec __dispatch_client_callout :16 (in libdispatch.dylib) 14 libdispatch.dylib 0x00000001d63ed468 __dispatch_lane_serial_drain :740 (in libdispatch.dylib) 15 libdispatch.dylib 0x00000001d63edf78 __dispatch_lane_invoke :440 (in libdispatch.dylib) 16 libdispatch.dylib 0x00000001d63f6f48 __dispatch_root_queue_drain :364 (in libdispatch.dylib) 17 libdispatch.dylib 0x00000001d63f6d08 __dispatch_worker_thread :268 (in libdispatch.dylib) 18 libsystem_pthread.dylib 0x00000001f9ff144c __pthread_start :136 (in libsystem_pthread.dylib) 19 libsystem_pthread.dylib 0x00000001f9fed8cc _thread_start :8 (in libsystem_pthread.dylib) Thread 132: 0 libsystem_kernel.dylib 0x00000002478e3cd4 _mach_msg2_trap :8 (in libsystem_kernel.dylib) 1 libsystem_kernel.dylib 0x00000002478e7214 _mach_msg_overwrite :428 (in libsystem_kernel.dylib) 2 libsystem_kernel.dylib 0x00000002478e705c _mach_msg :24 (in libsystem_kernel.dylib) 3 libdispatch.dylib 0x00000001d63ffe84 __dispatch_mach_send_and_wait_for_reply :548 (in libdispatch.dylib) 4 libdispatch.dylib 0x00000001d6400224 _dispatch_mach_send_with_result_and_wait_for_reply :60 (in libdispatch.dylib) 5 libxpc.dylib 0x00000001b2114e04 _xpc_connection_send_message_with_reply_sync :256 (in libxpc.dylib) 6 Foundation 0x000000019b6249f0 ___NSXPCCONNECTION_IS_WAITING_FOR_A_SYNCHRONOUS_REPLY__ :16 (in Foundation) 7 Foundation 0x000000019c06d1b4 -[NSXPCConnection _sendInvocation:orArguments:count:methodSignature:selector:withProxy:] :2100 (in Foundation) 8 CoreFoundation 0x000000019dfcb1cc ____forwarding___ :1072 (in CoreFoundation) 9 CoreFoundation 0x000000019dfd3200 ___forwarding_prep_0___ :96 (in CoreFoundation) 10 AudioSession 0x00000001c7754198 __ZNK4avas6client11SessionCore18SetBatchPropertiesEP12NSDictionaryIP8NSStringPU25objcproto14NSSecureCoding11objc_objectEPU15__autoreleasingP7NSArrayIPS2_IS4_P8NSNumberEENS_30AVAudioSessionBatchSetStrategyEbb :548 (in AudioSession) 11 AudioSession 0x00000001c7753e58 __ZNK4avas6client11SessionCore20SetBatchPropertiesMXEP12NSDictionaryIP8NSStringPU25objcproto14NSSecureCoding11objc_objectE :92 (in AudioSession) 12 AudioSession 0x00000001c775179c __ZN4avas6client11SessionCore11setCategoryEP8NSStringS3_32AVAudioSessionRouteSharingPolicym :472 (in AudioSession) 13 AudioSession 0x00000001c7768f88 -[AVAudioSession setCategory:withOptions:error:] :68 (in AudioSession) 14 AlipayWallet 0x000000010140580c -[AVAudioSession(APMHook) apmhook_setCategory:withOptions:error:] APMHookAudioSession.m:35 (in AlipayWallet) 15 AlipayWallet 0x00000001014001a4 -[APMAudioSessionManager resume] APMAudioSessionManager.m:718 (in AlipayWallet) 16 libdispatch.dylib 0x00000001d63e4adc __dispatch_call_block_and_release :32 (in libdispatch.dylib) 17 libdispatch.dylib 0x00000001d63fe7ec __dispatch_client_callout :16 (in libdispatch.dylib) 18 libdispatch.dylib 0x00000001d63ed468 __dispatch_lane_serial_drain :740 (in libdispatch.dylib) 19 libdispatch.dylib 0x00000001d63edf44 __dispatch_lane_invoke :388 (in libdispatch.dylib) 20 libdispatch.dylib 0x00000001d63f83ec __dispatch_root_queue_drain_deferred_wlh :292 (in libdispatch.dylib) 21 libdispatch.dylib 0x00000001d63f7ce4 __dispatch_workloop_worker_thread :692 (in libdispatch.dylib) 22 libsystem_pthread.dylib 0x00000001f9fee3b8 __pthread_wqthread :292 (in libsystem_pthread.dylib) 23 libsystem_pthread.dylib 0x00000001f9fed8c0 _start_wqthread :8 (in libsystem_pthread.dylib)

I am trying to make an app icon 20 x 20 pixel dimension. I cannot get the icon to be sized this way. It gets blurry. I have used adobe express + illustrator. I have not been able to size it. It is a 400 x 400 dimension png. I want the proportion to be 20 x 20 without losing the clarity.

Hi everyone, Just wanted to ask if anyone else is experiencing longer-than-usual review times this February. My apps has been in review for a bit longer than normal, so I’m wondering if there are any known delays or if it’s just me. Thanks!

How can I remove the "On My iPhone" option from the Calendar app? Like in the other picture, it doesn't show "On My iPhone" or "iCloud".

Hi everyone, I'm new to visionOS development. I'm trying to create a physics-based scene (with gravity) where users can pick up and move objects on a workbench. I am struggling with physics interactions during the drag gesture: Kinematic Mode: If I switch to .kinematic during the drag, the object moves smoothly but clips through other objects (no collisions). Dynamic Mode: I tried keeping it .dynamic and applying linear velocity toward the hand position, but the movement feels laggy and unresponsive. Hybrid Approach: I tried switching to .kinematic during DragGesture.onChange and back to .dynamic on collision, but this causes the entity to jitter/shake violently when touching other objects. Has anyone found a clean way to drag objects while maintaining solid collisions. Thanks for your help!

Hey everyone, I purchased an Apple Developer Program for 99 USD on January 1 2024, filled out my credit card that I use for iCloud+ storage plan, got my confirmation email that within 48h my developer account should be activated, but it never did. Plus after waiting more than 48h I wrote to support, describing everything, but never heard back from them. One thing I noticed during the checkout was I was asked for everything (name, address, CC number, expiry date) but not the CVV number. Is this normal, and would Apple be able to process the payment without it? I though about going through the enrolment process again, but am afraid of a double charge, in case my original enrolment gets accepted... Please advise and share your experiences when enrolling to the developer program. Thanks!

I am editing my iOS project in Xcode 16 and want to use the "Swift Compiler - Upcoming Features" section of the build settings to selectively enable the new Swift 6 language features. I have read the instructions for doing this and have dowloaded an Apple sample project and can see that section under the project and target-level Build Settings in the sample project However, when I open my Xcode project in XCode 16 that section does not appear. Is there any way for me to influence how Xcode 16 displays the build settings? In fact, no "Swift Compiler" sections appear at all under my project Build Settings (All | Combined). There is a "User-Defined" section that has the Swift Version, Compilation Mode and Optimization level. The project itself is several years old and was on a very old project version. I have upgraded my project document format to "Xcode 16" but it made no difference. I have compared my project and the sample project in a text editor and both seem to have similar structure. I tried removing unused and outdated settings from my project but that also had no effect. Is there an alternative to deleting my project file and adding the source files to it? I have a large project with multiple targets so that would be something I'd rather not do.

Feedback ticket ID: FB21797397 Summary When using posix_spawn() with posix_spawnattr_set_uid_np() to spawn a child process with a different UID, the eslogger incorrectly reports a setuid event as an event originating from the parent process instead of the child process. Steps to Reproduce Create a binary that do the following: Configure posix_spawnattr_t that set the process UIDs to some other user ID (I'll use 501 in this example). Uses posix_spawn() to spawn a child process Run eslogger with the event types setuid, fork, exec Execute the binary as root process using sudo or from root owned shell Terminate the launched eslogger Observe the process field in the setuid event Expected behavior The eslogger will report events indicating a process launch and uid changes so the child process is set to 501. i.e.: fork setuid - Done by child process exec Actual behavior The process field in the setuid event is reported as the parent process (that called posix_spawn) - indicating UID change to the parent process. Attachments I'm attaching source code for a small project with a 2 binaries: I'll add the source code for the project at the end of the file + attach filtered eslogger JSONs One that runs the descirbed posix_spawn flow One that produces the exact same sequence of events by doing different operation and reaching a different process state: Parent calls fork() Parent process calls setuid(501) Child process calls exec() Why this is problematic Both binaries in my attachment do different operations, achieving different process state (1 is parent with UID=0 and child with UID=501 while the other is parent UID=501 and child UID=0), but report the same sequence of events. Code #include <cstdio> #include <spawn.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/wait.h> #include <string.h> // environ contains the current environment variables extern char **environ; extern "C" { int posix_spawnattr_set_uid_np(posix_spawnattr_t *attr, uid_t uid); int posix_spawnattr_set_gid_np(posix_spawnattr_t *attr, gid_t gid); } int main() { pid_t pid; int status; posix_spawnattr_t attr; // 1. Define the executable path and arguments const char *path = "/bin/sleep"; char *const argv[] = {(char *)"sleep", (char *)"1", NULL}; // 2. Initialize spawn attributes if ((status = posix_spawnattr_init(&attr)) != 0) { fprintf(stderr, "posix_spawnattr_init: %s\n", strerror(status)); return EXIT_FAILURE; } // 3. Set the UID for the child process (e.g., UID 501) // Note: Parent must be root to change to a different user uid_t target_uid = 501; if ((status = posix_spawnattr_set_uid_np(&attr, target_uid)) != 0) { fprintf(stderr, "posix_spawnattr_set_uid_np: %s\n", strerror(status)); posix_spawnattr_destroy(&attr); return EXIT_FAILURE; } // 4. Spawn the process printf("Spawning /bin/sleep 1 as UID %d...\n", target_uid); status = posix_spawn(&pid, path, NULL, &attr, argv, environ); if (status == 0) { printf("Successfully spawned child with PID: %d\n", pid); // Wait for the child to finish (will take 63 seconds) if (waitpid(pid, &status, 0) != -1) { printf("Child process exited with status %d\n", WEXITSTATUS(status)); } else { perror("waitpid"); } } else { fprintf(stderr, "posix_spawn: %s\n", strerror(status)); } // 5. Clean up posix_spawnattr_destroy(&attr); return (status == 0) ? EXIT_SUCCESS : EXIT_FAILURE; } #include <cstdio> #include <cstdlib> #include <unistd.h> #include <sys/wait.h> #include <errno.h> #include <string.h> // This program demonstrates fork + setuid + exec behavior for ES framework bug report // 1. Parent forks // 2. Parent does setuid(501) // 3. Child waits with sleep syscall // 4. Child performs exec int main() { printf("Parent PID: %d, UID: %d, EUID: %d\n", getpid(), getuid(), geteuid()); pid_t pid = fork(); if (pid < 0) { // Fork failed perror("fork"); return EXIT_FAILURE; } if (pid == 0) { // Child process printf("Child PID: %d, UID: %d, EUID: %d\n", getpid(), getuid(), geteuid()); // Child waits for a bit with sleep syscall printf("Child sleeping for 2 seconds...\n"); sleep(2); // Child performs exec printf("Child executing child_exec...\n"); // Get the path to child_exec (same directory as this executable) char *const argv[] = {(char *)"/bin/sleep", (char *)"2", NULL}; // Try to exec child_exec from current directory first execv("/bin/sleep", argv); // If exec fails perror("execv"); return EXIT_FAILURE; } else { // Parent process printf("Parent forked child with PID: %d\n", pid); // Parent does setuid(501) printf("Parent calling setuid(501)...\n"); if (setuid(501) != 0) { perror("setuid"); // Continue anyway to observe behavior } printf("Parent after setuid - UID: %d, EUID: %d\n", getuid(), geteuid()); // Wait for child to finish int status; if (waitpid(pid, &status, 0) != -1) { if (WIFEXITED(status)) { printf("Child exited with status %d\n", WEXITSTATUS(status)); } else if (WIFSIGNALED(status)) { printf("Child killed by signal %d\n", WTERMSIG(status)); } } else { perror("waitpid"); } } return EXIT_SUCCESS; } posix_spawn.json fork_exec.json

I work on some proprietary codebases and can only use private AI services with them (currently MiniMax M2.1 and GLM 4.7). It all works great with both Claude Code and OpenCode agents, and I'd like to leverage the new agentic capabilities that are now in Xcode 26.3. I'm not seeing any option to connect to OpenCode, and both the Anthropic and OpenAI providers require an enterprise account (which I don't have access to). Are there any options that I'm missing here?

Hey all, I recently updated to Xcode 26.2 and I'm having the hardest time trying to download the corresponding iOS simulator. I installed Xcode from developer downloads and the app did not come loaded with an iOS simulator. When trying to download from Components in Settings, I only get the following message: Download failed due to a bad URL. (Catalog download for com.apple.MobileAsset.iOSSimulatorRuntime) Domain: com.apple.MobileAssetError.Download Code: 49 User Info: { checkConfiguration = 1; } I also tried downloading via Terminal but also get a download failed message. I am on the latest macOS and have over 600 GB of disk space available. In previous versions, I was able to download the iOS simulator directly from Developer Downloads, but anything after 26 is not there. Any suggestions?

I am developing an application on macOS in SwiftUI which exchanges files with other processes on a network. Some of these processes may be on Linux and write to a network drive. The files are refreshed at 10, 15 or 60 second intervals, and keep the same name. The software is supposed to run 24/7 and have persistent paths, so that on restart it does not need setting up. And it runs in the sandbox. I have got this working with macOS-only external processes by putting the exchange files in a fixed folder on the network storage and using security-scoped bookmarks to the file and or folder. But it doesn't work so well when one of the writing processes is a Linux process writing to its own storage. I can put a symlink in my fixed folder and if i select the folder and the symlink after each app restart, it works. but how can i make such a set-up persistent so it works after app restart without manual selection?

I am building an app for iOS and MacCatalyst that indexes files by storing their local paths. Because the app relies on the file remaining at its original location, I only want to accept items that can be opened in place. I am struggling to determine if an item is "Open In Place" compatible early in the drag-and-drop lifecycle. Specifically: In dropInteraction(_:canHandle:) and dropInteraction(_:sessionDidUpdate:), calling itemProvider.registeredTypeIdentifiers(fileOptions: [.openInPlace]) returns an empty array. Only once the drop is actually committed in dropInteraction(_:performDrop:) does that same call return the expected type identifiers. This creates a poor user experience. I want to validate the "In Place" capability at the very start of the session so the drop target only activates for valid files. If an item is ephemeral (like a dragged photo from the Photos app or a temporary export), the drop zone should not react at all. How can I reliably detect if an NSItemProvider supports .openInPlace before the performDrop delegate method is called?

I'm trying to enable Music Kit for my key however I keep seeing this message "There are no identifiers available that can be associated with the key" even though my identifier has music kit enabled. Can someone help out with this?

It is the beginning of February and we have not yet received our 1099 from Apple. Has anyone received theirs? Can I download it somewhere or does it only come via snail mail? Thank you

We are trying to implement a custom encryption scheme for our Core ML models. Our goal is to bundle encrypted models, decrypt them into memory at runtime, and instantiate the MLModel without the unencrypted model file ever touching the disk. We have looked into the native apple encryption described here https://developer.apple.com/documentation/coreml/encrypting-a-model-in-your-app but it has limitations like not working on intel macs, without SIP, and doesn’t work loading from dylib. It seems like most of the Core ML APIs require a file path, there is MLModelAsset APIs but I think they just write a modelc back to disk when compiling but can’t find any information confirming that (also concerned that this seems to be an older API, and means we need to compile at runtime). I am aware that the native encryption will be much more secure but would like not to have the models in readable text on disk. Does anyone know if this is possible or any alternatives to try to obfuscate the Core ML models, thanks

Hello developers, i have a project for SSC that includes metal shader code. The project runs fine when I build and run it in Xcode, but it does not run in the Swift Playground app. The reason is that Swift Playgrounds doesn’t compile/build source files with the .metal extension the same way Xcode does (so the shader never gets built/loaded in Playgrounds). The requirements say: “Your app playground must be built with and run on Swift Playgrounds 4.6 or Xcode 26, or later.” Since it says “or” (not “and”), does that mean it’s acceptable if the project only builds/runs in Xcode?