[Bug 86551] New: Screen freezes on boot at "fb: switching to inteldrmfb from simple"
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Sun Oct 19 15:59:55 PDT 2014
https://bugzilla.kernel.org/show_bug.cgi?id=86551
Bug ID: 86551
Summary: Screen freezes on boot at "fb: switching to inteldrmfb
from simple"
Product: Drivers
Version: 2.5
Kernel Version: 3.17, 3.17.1
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - Intel)
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: mike.auty at gmail.com
CC: intel-gfx-bugs at lists.freedesktop.org
Regression: No
I have a Samsung 700T tablet with an "Intel Corporation 3rd Gen Core processor
Graphcis Controller (rev 09)" according to lspci. Under <= 3.16.3, it boots
from UEFI and displays at 1920x1080 (the native resolution of the display).
After a short moment of starting and some kernel output, the screen flashes
black and then reshows itself and the main boot (kernel and post-kernel)
continues.
Under >= 3.17, when booting, the screen will freeze at the line "fb: switching
to inteldrmfb from simple" and no black flash or change in the screen will
happen.
Conducting a git bisection revealed the first bad commit to be
6dda730e55f412a6dfb181cae6784822ba463847 (where the message was "[drm]
Replacing VGA console driver").
Both 3.17 and 3.17.1 are affected. The machine seems unresponsive (and never
starts a system logger, so I can't see any further messages, or why it doesn't
continue on to the main system). If I disable modesetting by default it boots
fine, but then X won't start.
I'm happy to provide additional information or run tests, but I'm not sure what
else to provide at this point.
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