[Bug 2149877] Re: Intermittent micro‑stutters affecting mouse and audio after updating to Linux 7.0.0‑14‑generic on AMD system

On kernel 7.0.0-28 I'm seeing gaps, though I wasn't playing audio - so just big gaps in being able to use mouse and touchpad. Not sure if it's relevant, but the computer has been on overnight and I'm back on it over night, one stutter just typing this was over 5 seconds. This computer is has newer Ryzen AI chip, I see the same symptoms in another which a much older Vega 9 since I upgraded it to 26.04. I thought I'd start playing audio to see if I could hear any gaps, I've had no stutters since I started playing audio. First 15 minutes of using this laptop this morning (no audio playing): gaps in keyboard and mouse once or twice a minute for up to 5 minutes. Since then with audio playing: none yet. -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2149877 Title: Intermittent micro‑stutters affecting mouse and audio after updating to Linux 7.0.0‑14‑generic on AMD system Status in linux package in Ubuntu: Fix Released Status in linux source package in Resolute: Fix Released Bug description: For the past few days I have been experiencing intermittent micro‑stutters in Ubuntu 26.04. The mouse cursor freezes for about half a second, and occasionally the system audio also cuts out briefly. This happens irregularly but repeatedly. The issue started after updating to Linux 7.0.0‑14‑generic. Around the same time, linux‑firmware was also updated, so I cannot determine which change might be responsible. On my laptop (Intel + Nvidia) I cannot reproduce the issue, but another user with AMD hardware reported similar symptoms on Discourse. Affected hardware: · CPU: AMD Ryzen 5 9600X (12) @ 5.49 GHz · GPU: AMD Radeon RX 9060 XT · OS: Ubuntu 26.04 Observed behaviour: · Mouse cursor freezes for ~0.5 seconds (“micro‑stutter”). · Occasional short audio dropouts. · I have not noticed the issue while gaming, although another user claims it also happens there. I would appreciate guidance on additional tools or diagnostics that could help identify the root cause. At the moment, the only evidence I can provide is the observed behaviour described above. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2149877/+subscriptions