https://bugs.kde.org/show_bug.cgi?id=515751
--- Comment #3 from thexwarr1orsxneo <[email protected]> --- Hey everyone π just tested this again and wanted to share a clear update. After extensive testing, this strongly looks like a real regression rather than a local setup issue. Key findings: The Bluetooth input jitter happens on multiple PCs, not just one. It also reproduces on a live image, which rules out local configuration, drivers, NVIDIA, or system tweaks. I tested multiple kernels (including 6.8 and newer ones) and the jitter is still present. USB connection works perfectly β the issue only appears over Bluetooth. Bluetooth adapters tested: Intel Dual Band Wireless-AC 3165 β high jitter Intel Dual Band Wireless-AC 7260 β high jitter Realtek RTL8771B Bluetooth Radio β jitter present TP-Link UB5A (Bluetooth 5.3) β jitter reduced, but still present Low/normal polling rate controllers are mostly usable High polling rate controllers have severe jitter Controllers tested: Sony DualShock 4 DualShock 4 clone (Data Frog P03) Wolf V-6 controller Upate Very noticeable behavior with trackpads: On the P03 DualShock 4 clone, the trackpad cursor moves in slow motion, feels laggy, then randomly snaps back to normal speed. On the original Sony DualShock 4, the trackpad cursor usually moves normally but randomly becomes very fast, then returns to normal. This behavior never happened before Plasma 6.5.4 and worked correctly on Plasma 6.5.3. Because: The issue persists across hardware, kernels, and live images USB input is unaffected High polling rate Bluetooth HID devices are impacted the most This suggests a userspace regression above the kernel level, likely related to BlueZ / Bluetooth HID timing or event handling, or Plasmaβs Bluetooth/input integration β rather than a kernel-only Bluetooth driver issue. Just wanted to share the latest results β hope this helps narrow it down. -- You are receiving this mail because: You are watching all bug changes.
