Openmoko Bug #2344: early WSOD with linux 2.6.32 and Qi

[Openmoko Public Trac]

#2344: early WSOD with linux 2.6.32 and Qi
--------------------+-------------------------------------------------------
 Reporter:  lindi   |          Owner:  openmoko-kernel
     Type:  defect  |         Status:  new            
 Priority:  normal  |      Milestone:                
Component:  kernel  |        Version:                
 Severity:  major   |       Keywords:  wsod 2.6.32    
 Haspatch:  0       |      Blockedby:                
Estimated:          |    Patchreview:                
 Blocking:          |   Reproducible:  always        
--------------------+-------------------------------------------------------
 Steps to reproduce:
 1) git clone git://git.openmoko.org/kernel.git
 2) cd kernel
 3) git checkout -b om-gta02-2.6.32 origin/om-gta02-2.6.32
 4) mkdir lindi
 5) cp ./arch/arm/configs/gta02_drm_defconfig lindi/.config
 6) make O=lindi ARCH=arm silentoldconfig
 7) CROSS_COMPILE=arm-linux-gnueabi- make -j4 O=lindi ARCH=arm
 CONFIG_DEBUG_SECTION_MISMATCH=y EXTRAVERSION=om-
 gta02-2.6.32-a9254be10ac2294e
 8) arm-linux-gnueabi-objcopy -O binary -R .note -R .comment -S
 lindi/arch/arm/boot/compressed/vmlinux lindi/linux.bin
 9) mkimage -A arm -O linux -T kernel -C none -a 30008000 -e 30008000 -n
 "OM" -d lindi/linux.bin lindi/uImage-om-gta02-2.6.32-a9254be10ac2294e.bin
 10) boot the kernel with Qi 9ef7754b8243457c on gta02V5

 Expected results:
 10) the kernel boots

 Actual results:
 10) backlight is on and screen is completely white.

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Ticket URL: <https://docs.openmoko.org/trac/ticket/2344>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac

[Openmoko Public Trac]

#2344: early WSOD with linux 2.6.32 and Qi
--------------------+-------------------------------------------------------
 Reporter:  lindi   |          Owner:  openmoko-kernel
     Type:  defect  |         Status:  new            
 Priority:  normal  |      Milestone:                
Component:  kernel  |        Version:                
 Severity:  major   |       Keywords:  wsod 2.6.32    
 Haspatch:  0       |      Blockedby:                
Estimated:          |    Patchreview:                
 Blocking:          |   Reproducible:  always        
--------------------+-------------------------------------------------------

Comment(by lindi):

 I can login with ssh. suspend/resume does not change the situation.
 /dev/fb0 does not exist.

--
Ticket URL: <https://docs.openmoko.org/trac/ticket/2344#comment:1>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac

[Openmoko Public Trac]

#2344: early WSOD with linux 2.6.32 and Qi
--------------------+-------------------------------------------------------
 Reporter:  lindi   |          Owner:  openmoko-kernel
     Type:  defect  |         Status:  new            
 Priority:  normal  |      Milestone:                
Component:  kernel  |        Version:                
 Severity:  major   |       Keywords:  wsod 2.6.32    
 Haspatch:  0       |      Blockedby:                
Estimated:          |    Patchreview:                
 Blocking:          |   Reproducible:  always        
--------------------+-------------------------------------------------------

Comment(by ThibG):

 DRM and non-DRM configs use different modules.
 By using the DRM config, you disable the glamo-fb module, responsible for
 the display, in favor of the DRM/KMS ones.
 However, om-gta02-2.6.32 doesn't contain those modules, and you end up
 with nothing to handle display.

 By the way, om-gta02-2.6.32 containing gta02_drm_defconfig is useless and
 misleading, since the corresponding modules are not there.

--
Ticket URL: <https://docs.openmoko.org/trac/ticket/2344#comment:2>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac

[Openmoko Public Trac]

#2344: early WSOD with linux 2.6.32 and Qi
--------------------+-------------------------------------------------------
 Reporter:  lindi   |          Owner:  openmoko-kernel
     Type:  defect  |         Status:  new            
 Priority:  normal  |      Milestone:                
Component:  kernel  |        Version:                
 Severity:  major   |       Keywords:  wsod 2.6.32    
 Haspatch:  0       |      Blockedby:                
Estimated:          |    Patchreview:                
 Blocking:          |   Reproducible:  always        
--------------------+-------------------------------------------------------

Comment(by TimoJyrinki):

 WSOD fixing patches:
 http://github.com/radekp/linux-2.6/commit/98c3c2082a601d3982f73c0e83ac0748d781be2e
 http://github.com/radekp/linux-2.6/commit/b76e1206d85e7ae984bc2dcb9f91b74d5b41f4b0

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Ticket URL: <https://docs.openmoko.org/trac/ticket/2344#comment:3>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac