My yesterday's e-mail probably didn't pass through the spam checks of mail server. If anybody needs to look at the missing attachments, I've placed them at http://others-misc.oldium.net/attachments.tar.gz Cheers, OldÅich. On Thursday 24 March 2011 22:34:03 OldÅich JedliÄka wrote: > Hi Joey Lee, > > I've done some experiments, here are the results. > > On Thursday 24 March 2011 14:13:29 Joey Lee wrote: > > Hi OldÅich, > > > > Sorry bother you again, but after discuss with Johannes, he remind me > > one import thing: maybe your BT HW key emit scancode and wmi event at > > the same time. > > > > æ åï2011-03-24 æ 09:36 +0100ïJohannes Berg æåï > > > > > Hi OldÅich, > > > > > > > > Ah. So I guess when hci0 gets registered, the acer rfkill state > > > > > hasn't been updated yet, hence registering hci0 as blocked. > > > > > > > > No, that is not the case. I can play with `rfkill list` immediately > > > > after I press the HW bluetooth switch and show that hci0 is not there > > > > (still unregistered) while acer-bluetooth is already "unblocked" - > > > > I've tried to run `rfkill list` repeatedly manually from console > > > > immediately after I pressed the HW BT switch and acer-bluetooth was > > > > "unblocked" several runs while the hci0 wasn't there. When hci0 > > > > appeared, it was "blocked". > > > > > > > > As I wrote, I didn't find anything changing the global state, which > > > > is actually used to "block" the newly appearing hci0 (in the > > > > rfkill_sync_work method). It looks like the global state is just > > > > "blocked" forever - and it is "blocked" as a side-effect of the call > > > > to rfkill_init_sw_state (changes permanent=true) and then call to > > > > rfkill_register from the acer-wmi driver. I can verify this in the > > > > following days (that the global state stays the same all the time). > > > > > > Well the global state would be changed by the KEY_BLUETOOTH input > > > event. > > > > > > But like I said, it's tricky in this case because multiple events come > > > from the same event source and race against each other. > > > > > > johannes > > > > My Acer TravelMate 8572 is commercial notebook, it only emit wmi event > > when press wifi key. But, as I remember, there have some acer consumer > > notebook emit both scancode and wmi event. > > > > New acer-wmi driver will transfer wmi event to keycode (e.g. > > KEY_BLUETOOTH), if EC also emit KEY_BLUETOOTH, the rfkill-input will > > > > receive the key events twice, that means: > > global BT block (when system boot) -> BT unblock (from EC scancode) -> > > BT > > > > block (from acer-wmi) > > > > Could you please help me to check? > > > > - If your distro still have HAL, please run: > > + lshal -l -m > > + press BT HW key 1 time > > then check does HAL receive KEY_BLUETOOTH twice? > > I didn't uninstall hal yet, so the output of `lshal -l -m` (only the > monitoring part) when I press once BT HW key is attached. I've also patched > the kernel to have more debug logging (see the attached diff and log) and > the result is that the handler method from rfkill/input.c is not called, > the global state is once set to "blocked" and it keeps like that. I don't > know why the rfkill_event isn't called when I press the HW BT switch, it > could be part of my investigations in the following days. > > I've attached .config too, if you want to check that I missed something > that is needed by Acer WMI. > > Cheers, > OldÅich. > > > - Or, please try the following patch, it removed > > > > KEY_BLUETOOTH support in acer-wmi. If removed it but the BT killswitch > > still can reserve when you press BT HW key, that means not just > > > > acer-wmi emit KEY_BLUETOOTH: > > Thank's a lot! > > Joey Lee > > > > >From 20b3b8ba26cb37c8a44d11645c2d8d1f5344cfd7 Mon Sep 17 00:00:00 2001 > > > > From: Lee, Chun-Yi <jlee@xxxxxxxxxx> > > Date: Thu, 24 Mar 2011 21:07:43 +0800 > > Subject: [PATCH] remove KEY_BLUETOOTH for testing > > > > > > Signed-off-by: Lee, Chun-Yi <jlee@xxxxxxxxxx> > > --- > > > > drivers/platform/x86/acer-wmi.c | 1 - > > 1 files changed, 0 insertions(+), 1 deletions(-) > > > > diff --git a/drivers/platform/x86/acer-wmi.c > > b/drivers/platform/x86/acer-wmi.c index c978470..554ee12 100644 > > --- a/drivers/platform/x86/acer-wmi.c > > +++ b/drivers/platform/x86/acer-wmi.c > > @@ -102,7 +102,6 @@ enum acer_wmi_event_ids { > > > > static const struct key_entry acer_wmi_keymap[] = { > > > > {KE_KEY, 0x01, {KEY_WLAN} }, /* WiFi */ > > > > - {KE_KEY, 0x12, {KEY_BLUETOOTH} }, /* BT */ > > > > {KE_KEY, 0x21, {KEY_PROG1} }, /* Backup */ > > {KE_KEY, 0x22, {KEY_PROG2} }, /* Arcade */ > > {KE_KEY, 0x23, {KEY_PROG3} }, /* P_Key */ -- 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
