** Description changed: - steps: - 1. click suspend on UI to trigger suspend. - 2. press power button to wake up - 3. dark screen but ssh still work - - 00:02.0 VGA compatible controller [0300]: Intel Corporation Device - [8086:3e92] + [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.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759188 Title: [8086:3e92] display becomes blank after S3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem/+bug/1759188/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
