From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 73530] Asus U38N: Black screen with Radeon driver in Linux Date: Fri, 15 May 2015 14:16:17 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1720189812==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 3D85F6E9E8 for ; Fri, 15 May 2015 07:16:17 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1720189812== Content-Type: multipart/alternative; boundary="1431699377.E7dfF42.12520"; charset="UTF-8" --1431699377.E7dfF42.12520 Date: Fri, 15 May 2015 14:16:17 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=73530 --- Comment #101 from Alex Deucher --- Created attachment 115801 --> https://bugs.freedesktop.org/attachment.cgi?id=115801&action=edit leave panel power on all th time (In reply to Nicolas Werner from comment #98) > [ 5.722365] [drm:radeon_dp_set_link_config] *ERROR* corrupt dpcd, updating > [ 5.722952] [drm] radeon_dp_set_link_config, ffff8802a1878c00, 540000, 1 > [ 5.722953] [drm] dig_connector ffff8802a335fd60 > [ 5.722954] [drm] DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > [ 6.865341] [drm:radeon_dp_set_rx_power_state] *ERROR* corrupt dpcd, > updating > [ 6.865932] [drm] radeon_dp_set_rx_power_state, ffff8802a1878c00, 0 > [ 6.865933] [drm] dig_connector ffff8802a335fd60 > [ 6.865934] [drm] DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > [ 8.001613] [drm:radeon_dp_link_train] *ERROR* corrupt dpcd, updating > [ 8.002284] [drm] radeon_dp_link_train, ffff8802a1878c00 > [ 8.002285] [drm] dig_connector ffff8802a335fd60 > [ 8.002287] [drm] DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > [ 8.002287] [drm] dp_info dpcd: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 For some reason the DPCD reads back unreliably. It's all zeros the first few times. > [ 8.002289] [drm:radeon_dp_set_rx_power_state] *ERROR* corrupt dpcd, > updating > [ 8.002594] [drm] radeon_dp_getdpcd ffff8802a1878c00 > [ 8.002595] [drm] dig_connector ffff8802a335fd60 > [ 8.002595] [drm] DPCD: 11 0a 02 00 00 00 00 00 00 00 00 00 00 00 00 Finally it reads back correctly, but at this point it's too late. > [ 8.002597] [drm] radeon_dp_set_rx_power_state, ffff8802a1878c00, 17 > [ 8.002598] [drm] dig_connector ffff8802a335fd60 > [ 8.002599] [drm] DPCD: 11 0a 02 00 00 00 00 00 00 00 00 00 00 00 00 > [ 8.010706] [drm:radeon_dp_link_train_cr] *ERROR* clock recovery tried 5 > times > [ 8.010707] [drm:radeon_dp_link_train_cr] *ERROR* clock recovery failed Does this patch help the reliability any? -- You are receiving this mail because: You are the assignee for the bug. --1431699377.E7dfF42.12520 Date: Fri, 15 May 2015 14:16:17 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 101 on bug 73530 from 
Created attachment 115801 [details] [review]
leave panel power on all th time

(In reply to Nicolas Werner from comment #98)
> [    5.722365] [drm:radeon_dp_set_link_config] *ERROR* corrupt dpcd, updating
> [    5.722952] [drm] radeon_dp_set_link_config, ffff8802a1878c00, 540000, 1
> [    5.722953] [drm] dig_connector ffff8802a335fd60
> [    5.722954] [drm] DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [    6.865341] [drm:radeon_dp_set_rx_power_state] *ERROR* corrupt dpcd,
> updating
> [    6.865932] [drm] radeon_dp_set_rx_power_state, ffff8802a1878c00, 0
> [    6.865933] [drm] dig_connector ffff8802a335fd60
> [    6.865934] [drm] DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [    8.001613] [drm:radeon_dp_link_train] *ERROR* corrupt dpcd, updating
> [    8.002284] [drm] radeon_dp_link_train, ffff8802a1878c00
> [    8.002285] [drm] dig_connector ffff8802a335fd60
> [    8.002287] [drm] DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [    8.002287] [drm] dp_info dpcd: 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00

For some reason the DPCD reads back unreliably.  It's all zeros the first few
times.


> [    8.002289] [drm:radeon_dp_set_rx_power_state] *ERROR* corrupt dpcd,
> updating
> [    8.002594] [drm] radeon_dp_getdpcd ffff8802a1878c00
> [    8.002595] [drm] dig_connector ffff8802a335fd60
> [    8.002595] [drm] DPCD: 11 0a 02 00 00 00 00 00 00 00 00 00 00 00 00

Finally it reads back correctly, but at this point it's too late.


> [    8.002597] [drm] radeon_dp_set_rx_power_state, ffff8802a1878c00, 17
> [    8.002598] [drm] dig_connector ffff8802a335fd60
> [    8.002599] [drm] DPCD: 11 0a 02 00 00 00 00 00 00 00 00 00 00 00 00
> [    8.010706] [drm:radeon_dp_link_train_cr] *ERROR* clock recovery tried 5
> times
> [    8.010707] [drm:radeon_dp_link_train_cr] *ERROR* clock recovery failed

Does this patch help the reliability any?

You are receiving this mail because:
  • You are the assignee for the bug.
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