The patches don't apply, but looks like the native backlight control patch is now in Linus' 3.0 tree, and I could cherry-pick Matthew's last iteration of the i915 patch (from July 7th) from linux-next onto 3.0-rc7. Going to update my bug report to reflect this. Now the only problem is I have both acpi_video0 and intel_backlight, and GNOME Power Manager uses the former rather than the latter. Manually setting the brightness through the intel_backlight interface works. Thanks, everyone. -- Michel On 07/04/2011 10:57 AM, Zhang Rui wrote: > Hi, Michael, > > please check if the two patches attached help. > > thanks, > rui > > On Mon, 2011-07-04 at 16:48 +0800, Michel Alexandre Salim wrote: >> On 07/04/2011 10:46 AM, Michel Alexandre Salim wrote: >>> Here are the ectool dumps, before setting any brightness (backlight=0), >>> after setting it to 5, and after setting it to 3, plus the typescript >>> log of the commands issued and the sysfs readings. >>> >>> I then set brightness back to 0 (ec-after3.txt) -- didn't log the >>> keyboard interactions because it's the same (value for brightness >>> concurs with what is set, but actual_brightness is still -1) >>> >>> Let me know if you need anything else. Once we can at least pinpoint the >>> problem to the right subsystem, I'll add these attachments to the >>> correct bug report. >>> >>> Thanks, >>> >> And here's the last dump file, forgot to attach it earlier. >> >> Thanks, >> -- Michel Alexandre Salim µblog: http://identi.ca/hircus http://twitter.com/hircus GPG key ID: 78884778 () ascii ribbon campaign - against html e-mail /\ www.asciiribbon.org - against proprietary attachments -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html