Openmoko Bug #2262: backlight brightness of 11 unusable after blank/unblank
Openmoko Public Trac
bugs at docs.openmoko.org
Sat Mar 28 13:31:25 CET 2009
#2262: backlight brightness of 11 unusable after blank/unblank
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Reporter: lindi | Owner: openmoko-kernel
Type: defect | Status: new
Priority: normal | Milestone:
Component: System Software | Version: unspecified
Severity: normal | Keywords:
Haspatch: 0 | Blockedby:
Estimated: | Patchreview:
Blocking: | Reproducible:
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Steps to reproduce:
1) run Xorg
2) sudo sh -c 'echo 11 > /sys/class/backlight/gta02-bl/brightness'
3) xset s 10
4) sleep 10
5) xset s reset
Expected results:
If screen is readable after 2) then it is also readable after 5)
Actual results:
Screen is readable (although very dim) after 2) but completely blank after
5).
More info:
1) Setting backlight brithness to 12 or higher does not seem to cause this
bug.
2) This bug also occurs with Xglamo
3) If you wonder why this is a problem: I was using FR in a car at night
and wanted to use very dim display so that I don't disturb the driver.
After the screensaver hit blanked the display I was forced to remove the
battery to get the phone back to a usable state since using touchscreen
blindly to increase backlight brightness was quite impossible and error-
prone in my case.
{{{
kernel: Linux ginger 2.6.28-GTA02_lindi-andy-
tracking_b8b36e5ec3db71d5-mokodev #53 PREEMPT Sun Feb 22 13:08:50 UTC 2009
armv4tl GNU/Linux
kernel cmdline: rootfstype=jffs2 root=/dev/mtdblock6
console=ttySAC2,115200 console=tty0 loglevel=8 regular_boot mtdparts
=physmap-
flash:-(nor);neo1973-nand:0x00040000(u-boot),0x00040000(u-boot_env),0x00800000(kernel),0x000a0000(splash),0x00040000(factory),0x0f6a0000(rootfs)
rootfstype=ext2 root=/dev/mmcblk0p2 rootdelay=5 panic=10 mem=127M
u-boot: U-Boot 1.3.2+gitr46+dc633f4be2527f844158aa5085c278b0c3039d3f (Aug
8 2008 - 03:58:49)
xglamo: 1.3.0.0+git20080807-3
hardware revision: 0350
xserver-xorg-core: 2:1.5.99.902-1
xf86-video-glamo: 703acea1
}}}
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/2262>
docs.openmoko.org <http://docs.openmoko.org/trac/>
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