Re: fbcon bug?

["Antonino A. Daplas" <adaplas@gmail.com>]

Ville Syrjälä wrote:
> On Sun, Nov 13, 2005 at 09:24:36PM -0500, Zack Smith wrote:
>> Hi all,
>>
>> I've noticed that 2.6.14, when a console switch occurs going
>> from a console that is KD_TEXT to one that is KD_GRAPHICS,
>> fbcon doesn't seem to immediately shut down the cursor. It appears
>> to draw or undraw the cursor at least once before it disables
>> cursor activity due to graphics mode.
>>
>> Does anybody know if this bug has been corrected in 14.1 or .2,
>> or if anyone would mind if I go in and fix it?
> 
> I'm not sure if it's related but there is a cursor problem with atyfb. 
> When doing ioctl(... KD_GRAPHICS) the cursor remains visible in most 
> cases. Sometimes it does disappear properly but that is quite rare. 
> However doing a vt switch to another vt and back again seems to fix it 
> every time so I'm not sure it's the same problem you're seeing. None of 
> the other fb drivers I use implement a hardware cursor which is probably 
> the reason I'm only seeing it on atyfb.
>

Once the console is in KD_GRPHICS mode, all access the to the framebuffer
are essentially stopped.  So depending on the state of the cursor (visible
or not), it will stay that way even if a command to erase or draw the
cursor is given.

You may tell the console to erase the cursor before going to KD_GRAPHICS
mode as a workaround.

Tony



-------------------------------------------------------
SF.Net email is sponsored by:
Tame your development challenges with Apache's Geronimo App Server. Download
it for free - -and be entered to win a 42" plasma tv or your very own
Sony(tm)PSP.  Click here to play: http://sourceforge.net/geronimo.php