From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 90320] Lenovo ThinkPad E455 (Kaveri A10-7300): Blank built-in screen with radeon kms driver Date: Sat, 16 May 2015 15:53:35 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1768533382==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id ED3566E2DE for ; Sat, 16 May 2015 08:53:35 -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 --===============1768533382== Content-Type: multipart/alternative; boundary="1431791614.C26baD30.32598"; charset="UTF-8" --1431791614.C26baD30.32598 Date: Sat, 16 May 2015 15:53:34 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable https://bugs.freedesktop.org/show_bug.cgi?id=3D90320 --- Comment #10 from Samir Ibrad=C5=BEi=C4=87 --- (In reply to N.Leiten from comment #8) > Created attachment 115731 [details] > FHD Panel Datasheet. >=20 > Due this datasheet the panel looks the same as for DP configuration > comparing whith N133HSE-EA1 (asus u38n) panel. So it needs 2 lanes to init > video stream. >=20 > As for your dmesg, I see problem in dp_aux_ch and training procedure (the > voltage and emphasis is 0 which is not right at this point). Need to debug > further when I publish my patch and if it not help. >=20 > One more thing, do you have FullHD (1920x1080) panel or WHD (1366x768) on= e. > Because on Lenovo site I see Thinkpad e455 base model with WHD. The last = one > need only 1 DisplayPort lane to work. Are you saying these may be an issue: [drm:radeon_dp_aux_transfer_native] dp_aux_ch flags not zero: 00000201 [drm:drm_dp_i2c_do_msg] transaction failed: -5 ? --=20 You are receiving this mail because: You are the assignee for the bug. --1431791614.C26baD30.32598 Date: Sat, 16 May 2015 15:53:34 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Commen= t # 10 on bug 90320<= /a> from Samir Ibrad=C5=BEi=C4=87 
(In reply to N.Leiten from comment #8)
> Created attac=
hment 115731 [details]
> FHD Panel Datasheet.
>=20
> Due this datasheet the panel looks the same as for DP configuration
> comparing whith N133HSE-EA1 (asus u38n) panel. So it needs 2 lanes to =
init
> video stream.
>=20
> As for your dmesg, I see problem in dp_aux_ch and training procedure (=
the
> voltage and emphasis is 0 which is not right at this point). Need to d=
ebug
> further when I publish my patch and if it not help.
>=20
> One more thing, do you have FullHD (1920x1080) panel or WHD (1366x768)=
 one.
> Because on Lenovo site I see Thinkpad e455 base model with WHD. The la=
st one
> need only 1 DisplayPort lane to work.

Are you saying these may be an issue:

[drm:radeon_dp_aux_transfer_native] dp_aux_ch flags not zero: 00000201
[drm:drm_dp_i2c_do_msg] transaction failed: -5

?

You are receiving this mail because: =20=20=20=20=20=20
  • You are the assignee for the bug.
--1431791614.C26baD30.32598-- --===============1768533382== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVs IG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK --===============1768533382==--