#9590 NORM Opportu: XO-1 F11 screen rotate broken (B4 C2)

[Zarro Boogs per Child]

#9590: XO-1 F11 screen rotate broken (B4 C2)
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           Reporter:  YChao            |       Owner:  cjb                              
               Type:  defect           |      Status:  new                              
           Priority:  normal           |   Milestone:  Opportunity                      
          Component:  x window system  |     Version:  Development build as of this date
         Resolution:                   |    Keywords:                                   
        Next_action:  diagnose         |    Verified:  0                                
Deployment_affected:                   |   Blockedby:                                   
           Blocking:                   |  
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Comment(by puetzk):

 I am also seeing this problem, on a 2007 G1G1 machine (I belive C2
 hardware?) using the OS11 build from
 http://wiki.laptop.org/go/F11_for_XO-1

 If I examine the Xorg.0.log after roration fails, the error is:
 {{{
 (EE) GEODE(0): Couldn't allocate the shadow memory for rotation
 (EE) GEODE(0):  You need 0x3548a0 bytes, but only 0x0 bytes are available
 }}}
 So the problem seems to be running out of video memory. Examining the
 allocations, there is indeed no free memory.

 {{{
 (II) GEODE(0): Geode LX video memory e00000 bytes at 0xb5fe4000
 (II) GEODE(0): LX video memory:
 (II) GEODE(0):  Display: 0x72db20 bytes
 (II) GEODE(0):  Cursor: 0x3000 bytes
 (II) GEODE(0):  EXA: 0x58f4e0 bytes
 (II) GEODE(0):  FREE: 0x0 bytes
 (II) EXA(0): Offscreen pixmap area of 5829856 bytes
 }}}

 But 0x72db20 bytes seems like way too much for as 1200x900x24bit display.
 Hunting through the log a bit more, I find
   GEODE(0): Virtual size is 1940x1200 (pitch 0)

 So it's configuring extra virtual size, and using up all of its memory to
 do so.
 I have been able to make this work again by limiting the virtual
 resolution in /etc/X11/xorg.conf using `Virtual`

 {{{
 Section "Screen"
         Identifier "Screen0"
         Device     "Videocard0"
         Monitor    "Monitor0"
         DefaultDepth 16
         SubSection "Display"
                 Virtual 1200 900
                 Depth   16
                 Modes   "1200x900"
         EndSubSection
 EndSection
 }}}

 This reduces the memory commitments to:
 {{{
 (II) GEODE(0): Geode LX video memory e00000 bytes at 0xb6048000
 (II) GEODE(0): LX video memory:
 (II) GEODE(0):  Display: 0x2bf200 bytes
 (II) GEODE(0):  Cursor: 0x3000 bytes
 (II) GEODE(0):  EXA: 0x5ee800 bytes
 (II) GEODE(0):  FREE: 0x40f600 bytes
 (II) EXA(0): Offscreen pixmap area of 6219776 bytes
 }}}

 And all four rotations work again.

-- 
Ticket URL: <http://dev.laptop.org/ticket/9590#comment:7>
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