我一个YC2440板的液晶屏点不亮不知道这是什么问题？
这块板本来装的是WINCE，屏幕显示正常的，我给它装了一个嵌入式linux，内核是2.6.24,里面应该有Linux的内核驱动的，但是我装好了后系统运行后正常，连QT程序都可以运行。可就是屏幕点不亮,屏幕是AT070TN83，跟没有通电一样，不知道这是什么原因？下面是我测试的fb的信息：
\$ ls /dev/fb*
/dev/fb0
/dev/fb:
0
#
The framebuffer device was opened successfully.
Fixed screen info:
id: s3c2410fb
smem_start: 0x33d00000
smem_len: 768000
type: 0
type_aux: 0
visual: 2
xpanstep: 0
ypanstep: 0
ywrapstep: 0
line_length: 1600
mmio_start: 0x0
mmio_len: 0
accel: 0
The framebuffer device was mapped to memory successfully.
Successfully switched to graphics mode.
Variable screen info:
xres: 800
yres: 480
xres_virtual: 800
yres_virtual: 480
yoffset: 0
xoffset: 0
bits_per_pixel: 16
grayscale: 0
red: offset: 11, length: 5, msb_right: 0
green: offset: 5, length: 6, msb_right: 0
blue: offset: 0, length: 5, msb_right: 0
transp: offset: 0, length: 0, msb_right: 0
nonstd: 0
activate: 0
height: 480
width: 800
accel_flags: 0x0
pixclock: 40000
left_margin: 16
right_margin: 48
upper_margin: 6
lower_margin: 10
hsync_len: 96
vsync_len: 2
sync: 0
vmode: 0
Frame Buffer Performance test...
Average: 30075 usecs
Bandwidth: 24.353 MByte/Sec
Max. FPS: 33.250 fps
Will draw 3 rectangles on the screen,
they should be colored red, green and blue (in that order).
Done.
下面是我内核配置的一些信息：
Graphics support ────────────────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus --->. │
│ Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, │
│ <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> │
│ for Search. Legend: [*] built-in [ ] excluded <M> module < > │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ < > Lowlevel video output switch controls │ │
│ │ <*> Support for frame buffer devices ---> │ │
│ │ [*] Backlight & LCD device support ---> │ │
│ │ Display device support ---> │ │
│ │ Console display driver support ---> │ │
│ │ [*] Bootup logo ---> │ │
│ │ │ │
│ │
#=============================================================
───────────────── Support for frame buffer devices ────────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus --->. │
│ Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, │
│ <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> │
│ for Search. Legend: [*] built-in [ ] excluded <M> module < > │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ --- Support for frame buffer devices │ │
│ │ [*] Enable firmware EDID │ │
│ │ [*] Enable Video Mode Handling Helpers │ │
│ │ [*] Enable Tile Blitting Support │ │
│ │ *** Frame buffer hardware drivers *** │ │
│ │ < > Epson S1D13XXX framebuffer support │ │
│ │ <*> S3C2410 LCD framebuffer support │ │
│ │ LCD select (7 inch 800X480 LCD) ---> │ │
│ │ [ ] S3C2410 lcd debug messages │ │
│ │ < > Virtual Frame Buffer support (ONLY FOR TESTING!)
#======================================================================
┌──────────────────── Backlight & LCD device support ─────────────────────┐
│ Arrow keys navigate the menu. <Enter> selects submenus --->. │
│ Highlighted letters are hotkeys. Pressing <Y> includes, <N> excludes, │
│ <M> modularizes features. Press <Esc><Esc> to exit, <?> for Help, </> │
│ for Search. Legend: [*] built-in [ ] excluded <M> module < > │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ --- Backlight & LCD device support │ │
│ │ <*> Lowlevel LCD controls │ │
│ │ <*> Samsung LTV350QV LCD Panel │ │
│ │ <*> Lowlevel Backlight controls │ │
│ │ <*> Generic (aka Sharp Corgi) Backlight Driver http://cache.amobbs.com/bbs_upload782111/files_34/ourdev_592353PFCV49.png
(原文件名:Screenshot-Terminal.png)
http://cache.amobbs.com/bbs_upload782111/files_34/ourdev_592354YDPJJW.png
(原文件名:Screenshot-Terminal-1.png)
http://cache.amobbs.com/bbs_upload782111/files_34/ourdev_592355N5TD4N.png
(原文件名:Screenshot-Terminal-2.png)
http://cache.amobbs.com/bbs_upload782111/files_34/ourdev_592356BYIKFG.png
(原文件名:Screenshot-Terminal-3.png) 看过留下足迹…… 我的是：HSD050点不亮
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