Sorry, I checked the logs and tried to write comment last month and had no time to finish it.
In both 0323 and 0324 logs, the HPD events burst may happen right after we clear HPD. So we may still suffer from the lockup issue. We don't have a clear picture where the lockup comes from. And blindly extend the block/unblock section and clear the HPD events is not a right direction. I think we should submit current changes to the upstream and see if there is any other idea. [ 473.906781] i915 0000:00:02.0: [drm:intel_dp_stop_link_train [i915]] [ENCODER:293:DDI E (TC)/PHY TC3] stopping link train, clearing HPD before unblock [ 473.906930] i915 0000:00:02.0: [drm:intel_hpd_clear_and_unblock [i915]] [ENCODER:293:DDI E (TC)/PHY TC3] HPD clear_and_unblock: pin 11, cleared event=0 retry=0 short=1 long=0 [ 474.180656] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:293:DDI E (TC)/PHY TC3] - short [ 474.180803] i915 0000:00:02.0: [drm:intel_dp_check_mst_status [i915]] [ENCODER:293:DDI E (TC)/PHY TC3] MST status check: active_streams=1 [ 474.181632] i915 0000:00:02.0: [drm:intel_dp_check_mst_status [i915]] DPRX ESI: 41 10 00 04 [ 474.183282] i915 0000:00:02.0: [drm:intel_enable_transcoder [i915]] enabling pipe B [ 474.184282] i915 0000:00:02.0: [drm:intel_dpll_enable [i915]] enable MG PLL 3 (active 0x6, on? 1) for [CRTC:262:pipe C] [ 474.184457] i915 0000:00:02.0: [drm:mst_stream_pre_enable [i915]] active MST streams 1 -> 2 [ 474.184775] i915 0000:00:02.0: [drm:intel_dp_check_mst_status [i915]] DPRX ESI: 41 00 00 04 [ 474.203544] i915 0000:00:02.0: [drm:gen11_hpd_irq_handler [i915]] hotplug event received, stat 0x00040000, dig 0x00008988, pins 0x00000800, long 0x00000000 [ 474.203804] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:293:DDI E (TC)/PHY TC3] - short [ 474.203936] i915 0000:00:02.0: [drm:intel_dp_check_mst_status [i915]] [ENCODER:293:DDI E (TC)/PHY TC3] MST status check: active_streams=2 [ 474.204829] i915 0000:00:02.0: [drm:intel_dp_check_mst_status [i915]] DPRX ESI: 41 00 00 04 [ 474.236594] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:293:DDI E (TC)/PHY TC3] - short [ 474.236743] i915 0000:00:02.0: [drm:intel_dp_check_mst_status [i915]] [ENCODER:293:DDI E (TC)/PHY TC3] MST status check: active_streams=2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2141225 Title: Kernel panic when connecting USB-C Dell monitors on Ubuntu kernel 6.17.0-14-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.17/+bug/2141225/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
