Brightness Keeps Resetting

[arevai]

My new PC is Touchsmart 300-1025. Same problem as described by others: brightness resets to 100% after any of the following actions: cold boot, restart, wake up from sleep mode or returning from screensaver mode.

Unfortunately, it seems that  the SP44493 fix didn't solve my problem. Is there anything else one needs to do than run and install this patch? Any suggestions would be welcome.

For HP support personnel: (if you are reading the forum) It is apparent that most of your technicians are not familiar with this problem and they keep directing customers to Microsoft (as a Windows 7 issue). From what I read so far, MS provided guidleines for system developers and therefore it's an implementation problem. A pushed s/w fix/update would be appropriate.

[sumsolstice]

That is odd - I tested the patch on the same model 300-1025.  Did the update indicate it installed correctly?  This is the first instance that I've heard that this update didn't resolve the issue.   Have you disabled any services in the services panel?   You might try running application/driver recovery for the Keyboard driver and try re-applying the update?

I would also update to the latest BIOS version listed on the download page for your product as well.

-dm (a long-time HP employee, but the comments/suggestions are my own, not my employer's)

[happythanh]

Dear Sumsolstice,

This fix does not work for me, I am using 600-1371, the screen is too bright, I usually adjust the brightness to 0%, but after restarting, or logging off, the brightness jump back to 30%, I have had chat few times with the technical support but it did not help

Now, my only solution is to remove the OSDs ACPI driver from my PC and it works,  the brightness setting is there every time I restart, and defenitely I can conclude that the problem is with the OSDs drivers.

Without the OSDs driver, I can not use the hot keys on keyboard but at least it's better than the brightness setting is lost all the time.

pls help me to fix this.

[sumsolstice]

I just took my TouchSmart 600-1055, did a full restore back to original.  Set the display brightness via the KB function keys  FN F10, FN F11 to 30%.   Verified it stayed there through reboots, and restarts from sleep.

I am on BIOS 5.12.

Did all the MS updates.   Started with ALL optional HW updates (all nVidia, Realtek, TV tuner, etc).   Went through all of them - then did all the important/critical updates except for SP1, the .NET and IE9 (they are large, take a long time, etc, this took hours to do as it was).   Still works OK.    Then I did SP1.   And subsequent updates to them (still haven't done .NET and IE9).   Everything is working as it should.   Through sleep, reboot.  Stays at 30%.

I have seen issues when the BIOS, GFX driver, TS, and KB/OSD drivers get out of whack.   But - on my system - with BIOS 5.12,  nVidia gfx GT230 driver 8.17.11.9819, and OSD app v 1.0.0.5 gen 3- it's sticking.

You might try re-installing the OSD app from the recovery manager program group, recovery manager  - then hardware driver reinstallation.  It has the Buttons and OSD ACPI driver gen2 in it, as well as the nVidia Driver, etc.  You could try selectively restoring them, and seeing if you find the magic combination.   Or try the updates from Windows Update (or HP.COM).

Probably a bit of trial/error.   Don't forget restore points can be your friend when dinking around trying to resolve driver issues.   Also, driver rollback in control panel can be even quicker for testing.

Good luck...

-DM (a long-time HP employee)