This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed- xenial'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1759188 Title: [8086:3e92] display becomes blank after S3 Status in HWE Next: New Status in linux package in Ubuntu: Fix Released Status in linux-oem package in Ubuntu: In Progress Status in linux source package in Xenial: Invalid Status in linux-oem source package in Xenial: Fix Committed Status in linux source package in Artful: Fix Committed Status in linux-oem source package in Artful: Invalid Status in linux source package in Bionic: Fix Released Status in linux-oem source package in Bionic: In Progress Bug description: [Impact] The display becomes black after S3 with the following error messages. [ 38.304449] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1) [ 38.304462] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpd] NAK on first message, retry [ 38.306726] [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1) [ 38.306733] [drm:drm_do_probe_ddc_edid [drm]] drm: skipping non-existent adapter i915 gmbus dpd [ 38.311251] [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode HDMI ID: DP-HDMI ADAPTOR\004 (err 0) [ 38.313538] [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode adaptor ID: 44 (err 0) [ 38.313554] [drm:intel_hdmi_set_edid [i915]] DP dual mode adaptor (type 1 HDMI) detected (max TMDS clock: 165000 kHz) [ 38.313557] [drm:drm_helper_hpd_irq_event [drm_kms_helper]] [CONNECTOR:115:HDMI-A-1] status updated from disconnected to disconnected [Fix] This commit pointed out by Timo fixes the issue. [Regression Potential] Should be low, although the change applies broadly. From the patch description, it explains it should be safe. > This workaround was designed to minimize the impact only > to save the bad case with that link rates. But HW engineers > indicated that it should be safe to apply broadly, although > they were expecting the DPLL0 link rate to be unchanged on > runtime. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1759188/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp