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: Tue, 05 May 2015 17:37:25 +0000 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0892342157==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id BDA5B6E084 for ; Tue, 5 May 2015 10:37:25 -0700 (PDT) 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 --===============0892342157== Content-Type: multipart/alternative; boundary="1430847445.FFE680.22754"; charset="UTF-8" --1430847445.FFE680.22754 Date: Tue, 5 May 2015 17:37:25 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=90320 Bug ID: 90320 Summary: Lenovo ThinkPad E455 (Kaveri A10-7300): Blank built-in screen with radeon kms driver Product: DRI Version: DRI git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: blocker Priority: highest Component: DRM/Radeon Assignee: dri-devel@lists.freedesktop.org Reporter: sibradzic@gmail.com Created attachment 115550 --> https://bugs.freedesktop.org/attachment.cgi?id=115550&action=edit dmesg 4.1 rc1 As soon as the radeon kms switches in from efifb, the screen goes blank for the moment (no backlight), and then the backlight switches in, but the screen remains black. External HDMI output works just fine. No X is involved, I can't even see the kms console @ eDP. I can even control the backlight on the eDP display, but all i get is the various shades of black. Fglrx works fine, although it flickers wildly before the picture gets stable. I've tried numerous things, like forcing EDID that was grabbed from fglrx, disabling audio, applying all the DP training / backlight disabling patches as in https://bugs.freedesktop.org/show_bug.cgi?id=73530, all to no avail. Currently on linux 4.1rc1, tried 3.13, 3.16 & 3.19 as well, same issue. Please help! I bought this laptop cause I prefer AMD, and was expecting Lenovo to work great with Linux, but so far its broken. Ready to try some patches... -- You are receiving this mail because: You are the assignee for the bug. --1430847445.FFE680.22754 Date: Tue, 5 May 2015 17:37:25 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"
Bug ID 90320
Summary Lenovo ThinkPad E455 (Kaveri A10-7300): Blank built-in screen with radeon kms driver
Product DRI
Version DRI git
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity blocker
Priority highest
Component DRM/Radeon
Assignee dri-devel@lists.freedesktop.org
Reporter sibradzic@gmail.com 

Created attachment 115550 [details]
dmesg 4.1 rc1

As soon as the radeon kms switches in from efifb, the screen goes blank for the
moment (no backlight), and then the backlight switches in, but the screen
remains black. External HDMI output works just fine. No X is involved, I can't
even see the kms console @ eDP. I can even control the backlight on the eDP
display, but all i get is the various shades of black. Fglrx works fine,
although it flickers wildly before the picture gets stable.

I've tried numerous things, like forcing EDID that was grabbed from fglrx,
disabling audio, applying all the DP training / backlight disabling patches as
in https://bugs.freedesktop.org/show_bug.cgi?id=73530, all to no avail.
Currently on linux 4.1rc1, tried 3.13, 3.16 & 3.19 as well, same issue.

Please help! I bought this laptop cause I prefer AMD, and was expecting Lenovo
to work great with Linux, but so far its broken. Ready to try some patches...

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