3.5.x boot hang after conflicting fb hw usage <driver> vs VESA VGA - removing generic driver
Randy Dunlap
rdunlap at xenotime.net
Fri Aug 17 15:28:54 PDT 2012
On 08/17/2012 03:25 PM, Justin M. Forbes wrote:
> for <driver>, we have verified cases on inteldrmfb, radeondrmfb, and
> cirrusdrmfb.
>
> This is the last message displayed before the system hangs. This seems
> to be hitting a large number of users in Fedora, though certainly not
> everyone. This started happening with the 3.5 updates, and is still an
> issue. It appears to be a race condition, because various things have
> allowed boot to continue for some users, though there is no clear work
> around. Has anyone else run across this? Any ideas. For more
> background we have the following bugs:
>
> inteldrmfb:
> https://bugzilla.redhat.com/show_bug.cgi?id=843826
>
> radeondrmfb:
> https://bugzilla.redhat.com/show_bug.cgi?id=845745
>
> cirrusdrmfb <kvm>:
> https://bugzilla.redhat.com/show_bug.cgi?id=843860
>
> It should be noted that the conflicting fb hw usage message is not new,
> it has been around for a while, but this is the last message seen before
> the hang.
Hi, (adding dri-devel mailing list)
I started seeing this problem on 3.5-rc6.
AFAICT, the system is not actually hung, it's just that no output
is showing up on the real (physical) output device (display) -- it's
going somewhere else (or to the bit bucket).
--
~Randy
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