[Bug 27008] rs480 Flickers when entering KMS on Dell Inspiron 1501

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27008

Elton Carvalho <eltonfc at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |

--- Comment #7 from Elton Carvalho <eltonfc at gmail.com> 2010-05-23 09:38:56 PDT ---
After a few boots, the bug is back.

In fact, KMS worked fine for a few boots after applying the patch, then I got
the flickering again.

Before reopening this bug, I updated my kernel to 2.6.24 (which has the
proposed patch applied) and the flickering on boot persists.

A few things I noticed: When I updated the kernel and forgot to recompile the
X11 radeon driver against the new kernel, I got the flickering on the terminal,
but not on X (of course, compiz showed me that white screen, but gdm worked
fine). I could alternate between the VTs and X, seeing flickering screen on the
VTs and an OK working GDM. 

After compiling X11 radeon drivers (from git-master), I get flickering all the
time, until X blanks the screen for powersaving. When I bring it back,
everything works fine: KMS, VT and X, and switching between then. And I get no
more flickering until a reboot.

I attached a DMESG and a Xorg.0.log from a flickering boot (and subsequent X
blanking and bringing back).

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