Likely same root cause as bug #2150605 (HP ZBook Fury G1i, Arrow Lake-S). Same i915 Failed to bring PHY A to idle / PHY A Read 0c70 / DPLL hw state mismatch signature, same code path in intel_cx0_phy.c, same Ubuntu 26.04 / Wayland / Blackwell-hybrid environment, same ineffective workarounds (i915.enable_psr=0 converts hang to slow recover but doesn't fix). Key differences in my case: (1) Arrow Lake-P variant rather than Arrow Lake-S, (2) bug triggers on every s2idle resume regardless of dwell time, not only long dwells, (3) recovery time 30–75s rather than 5–10s, and (4) occasional silent hard freezes ~minute after a seemingly-clean resume (see "Silent freeze case" in the description). Ubuntu kernel team to decide formal duplicate status.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2154646 Title: i915 Arrow Lake: PHY A powerdown failure + DPLL hw state mismatch on s2idle resume — recovers most cycles, hard-freezes some (Dell Pro Max 16, kernel 7.0.0-22) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2154646/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
