Re: [Bugme-new] [Bug 10666] New: cfag12864bfb messing up vc on load

[Andrew Morton <akpm@linux-foundation.org>]

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Sun, 11 May 2008 05:10:41 -0700 (PDT) bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=10666
> 
>            Summary: cfag12864bfb messing up vc on load
>            Product: Drivers
>            Version: 2.5
>      KernelVersion: 2.6.21+
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: low
>           Priority: P1
>          Component: Console/Framebuffers
>         AssignedTo: jsimmons@infradead.org
>         ReportedBy: devzero@web.de
> 
> 
> Latest working kernel version: n/a
> 
> Earliest failing kernel version: at least 2.6.21
> 
> Distribution: opensuse 10.3
> 
> Hardware Environment: vmware
> 
> Software Environment: opensuse 10.3 + kernel 2.6.26rc1
> 
> Problem Description:
> when doing some module regression testing (load/unload most available modules),
> cfag12864bfb driver always kills the local console on load and locks you out.
> visible area of vc shrinks to 16x4 and output freezing. this happens if you
> don`t have appropriate hardware attached, cannot test with hw attached (don`t
> own such). no vc switching afterwards. cannot unload module from remote (ssh)
> either. need reboot.
> 
> Steps to reproduce:
> save all of your important data, switch to textconsole, modprobe cfag12864bfb 
> 
> dmesg shows:
> Console: switching to mono frame buffer device 16x8
> fb0: cfag12864b frame buffer device
> 
> contacted the author who confirmed the issue and tells that this didn`t happen
> initially. iirc, he thinks this is a regression due to change in framebuffer
> layer. didn`t get a response since then, maybe he`s lacking time.
> i`m putting it here so it`s being marked as a ToDo and won`t get lost.
> 
> 
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