Bug 16093
| Summary: | Backlight control not working with Acer Travelmate 6492 and kernel 2.6.34 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Jay (juergen.brunk) |
| Component: | Platform | Assignee: | acpi_platform-drivers (acpi_platform-drivers) |
| Status: | RESOLVED INSUFFICIENT_DATA | ||
| Severity: | normal | CC: | alan, juergen.brunk |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.34 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
dmidecode Output
DSDT table Kernel config file |
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Created attachment 26600 [details]
DSDT table
Created attachment 26601 [details]
Kernel config file
What version of acer_acpi are you using? On which distribution and kernel version? 2.6.34 (the .24 was a typo), Vanilla Kernel, and Gentoo patched version |
Created attachment 26599 [details] dmidecode Output Hello, i'm using a Acer Travelmate 6492 Laptop, with i915 Kernel-Mode-Setting. The Backlight control isn't working, neither with the bare kernel nor with loaded acer_wmi module. Kernel Parameter (tested w/ and w/o): "acpi_backlight=vendor" What steps will reproduce the problem? 1. modprobe acer_wmi What is the expected output? What do you see instead? [ 5553.518046] acer-wmi: Acer Laptop ACPI-WMI Extras [ 5554.206261] usb 7-1: new full speed USB device using uhci_hcd and address 3 [ 5554.407399] Bluetooth: Generic Bluetooth USB driver ver 0.6 [ 5554.407694] usbcore: registered new interface driver btusb [ 5554.480212] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 5554.480215] Bluetooth: BNEP filters: protocol multicast [ 5554.491812] Bluetooth: SCO (Voice Link) ver 0.6 [ 5554.491814] Bluetooth: SCO socket layer initialized No Error Message appears, and the backlight subsystem seems to be present: # ls -l /sys/class/backlight/acer-wmi/ insgesamt 0 -r--r--r-- 1 root root 4096 1. Jun 09:59 actual_brightness -rw-r--r-- 1 root root 4096 1. Jun 09:59 bl_power -rw-r--r-- 1 root root 4096 1. Jun 09:59 brightness lrwxrwxrwx 1 root root 0 1. Jun 09:59 device -> ../../../acer-wmi -r--r--r-- 1 root root 4096 1. Jun 08:50 max_brightness drwxr-xr-x 2 root root 0 1. Jun 09:59 power lrwxrwxrwx 1 root root 0 1. Jun 08:50 subsystem -> ../../../../../class/backlight -rw-r--r-- 1 root root 4096 1. Jun 08:50 uevent But changing the Value in "brightness" doesn't affect anything, nor the Backlight/Brightness Keys will work. What version of acer_acpi are you using? On which distribution and kernel version? 2.6.24, Vanilla Kernel and Gentoo patched version Please provide any additional information below. see attached dpmidecode, dsdt table, kernel config Thanks! ;-) Best Regards, Jay