From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 73291] New: Kernel 3.13.7 boots with hybrid Intel/ATI but to
blank graphical screen
Date: Mon, 31 Mar 2014 14:34:14 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=73291
Bug ID: 73291
Summary: Kernel 3.13.7 boots with hybrid Intel/ATI but to blank
graphical screen
Product: Drivers
Version: 2.5
Kernel Version: 3.13.7
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Video(DRI - non Intel)
Assignee: drivers_video-dri@kernel-bugs.osdl.org
Reporter: mike.cloaked@gmail.com
Regression: No
Created attachment 131071
--> https://bugzilla.kernel.org/attachment.cgi?id=131071&action=edit
systemd journal for current boot with kernel 3.13.6
Running arch linux stock kernel. Previous Kernel 3.13.6 boots to graphical
screen giving a usable laptop but problems with radeon apparent from systemd
journal log. Updating the kernel to 3.13.7 boots the laptop, but the graphical
screen is blank apart from static cursor at top left of the screen. The kernel
is still running and able to ssh in to get at the log files (attached). No
graphics is usable.
Hybrid graphics in this Lenovo Thinkpad S540 is:
$ lspci | egrep '(Graphics|Display)'
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Graphics Controller (rev 09)
06:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT
[Radeon HD 8670A]
i915 and radeon modules are built into the initial ramdisk.
xrandr only sees one provider:
$ xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x48 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs:
4 outputs: 5 associated providers: 0 name:Intel
I have tried adding intel.modeset=0, and separately radeon.runpm=0 to the
kernel line but this does not remedy the situation.
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