According to my tests backports are needed for 12.04 LTS (Precise) and 14.04 LTS (Trusty).
Ubuntu 12.04 LTS with 3.2 kernel reports the following: [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up [drm:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 18000000, was 12060000 [drm:gen6_sanitize_pm] *ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 18070000, was 18000000 (I reported bug 1602241 about two last messages) [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 Ubuntu 12.04 LTS with 3.13 kernel and Ubuntu 14.04 LTS report the following: [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 Ubuntu 16.04 LTS is not affected because of newer i915 driver: [drm] Initialized i915 1.6.0 20151010 It seems that these error messages are not critical, I can use my laptop for all tasks. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1600505 Title: Sometimes I get "[drm:intel_dp_start_link_train] *ERROR* too many full retries, give up" in terminals To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1600505/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
