Bug 15900
| Summary: | Acer Aspire 5740 not recognized by acer-wmi | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Jonathan (xtragb) |
| Component: | Platform | Assignee: | acpi_platform-drivers (acpi_platform-drivers) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | low | CC: | alan, carlos, jlee, joydeep |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.33-ARCH #1 SMP PREEMPT | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | ACPI Dump | ||
After further testing, xbacklight seems not to work. However, since I added acpi_osi="Linux" to my GRUB kernel parameters I can adjust backlight brightness with the function keys within Xorg. Unfortunately, I still get the above error when I try to load acer-wmi. Found the same with kernel 2.6.34 and acer 5740. No brightness control through function key. ``````````````` #modprobe acer-wmi FATAL: Error inserting acer_wmi (/lib/modules/2.6.34.2010/kernel/drivers/platform/x86/acer-wmi.ko): No such device `````````````` ````````````````` #dmesg | grep acer [ 7.373730] acer-wmi: Acer Laptop ACPI-WMI Extras [ 7.542888] acer-wmi: Unable to detect available WMID devices [ 8187.222037] acer-wmi: Acer Laptop ACPI-WMI Extras [ 8187.286147] acer-wmi: Unable to detect available WMID devices ``````````````````````````` This issue might already fixed by Pali Rohár's patch, but need Joydeep help to double check : commit d64773d0c4f9f913c3c160795a64fcccd4d676c1 Author: Pali Rohár <pali.rohar@gmail.com> Date: Fri Mar 11 12:36:43 2011 -0500 acer-wmi: Fix WMI ID This patch change WMI ID to upper characters. With this patch module acer-wmi is automatically loaded when WMI ID is detected. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Tested-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index 0c0f764..5839fac 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -85,7 +85,7 @@ MODULE_LICENSE("GPL"); #define AMW0_GUID1 "67C3371D-95A3-4C37-BB61-DD47B491DAAB" #define AMW0_GUID2 "431F16ED-0C2B-444C-B267-27DEB140CF9C" #define WMID_GUID1 "6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3" -#define WMID_GUID2 "95764E09-FB56-4e83-B31A-37761F60994A" +#define WMID_GUID2 "95764E09-FB56-4E83-B31A-37761F60994A" #define WMID_GUID3 "61EF69EA-865C-4BC3-A502-A0DEBA0CB531" /* @@ -94,7 +94,7 @@ MODULE_LICENSE("GPL"); #define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026" MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB"); -MODULE_ALIAS("wmi:6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"); +MODULE_ALIAS("wmi:6AF4F258-B401-42Fd-BE91-3D4AC2D7C0D3"); MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); enum acer_wmi_event_ids { |
Created attachment 26202 [details] ACPI Dump sudo modprobe acer-wmi gives this result: FATAL: Error inserting acer_wmi (/lib/modules/2.6.33-ARCH/kernel/drivers/platform/x86/acer-wmi.ko): No such device output from dmesg includes: .. Hardware name: Aspire 5740 .. acer-wmi: Acer Laptop ACPI-WMI Extras acer-wmi: Unable to detect available WMID devices From what I have read, this may be at least part of the reason I am unable to control the LCD backlight brightness on this laptop from within the graphical desktop environment. I am able to control the brightness from the console and set the brightness with xbacklight from within my .xinitrc. I have not yet encountered any other problems resulting from this bug.