From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cedric Sodhi Date: Tue, 10 May 2011 13:43:18 +0200 Subject: BCMSMAC freezes system on trivial oeprations In-Reply-To: <4DC919FD.8060200@broadcom.com> References: <20110509134416.GA1932@engine> <4DC919FD.8060200@broadcom.com> Message-ID: <20110510114318.GF2444@fly> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: b43-dev@lists.infradead.org 1 - The distro is Gentoo 2 - Initially? I don't understand the question 3 - No, I did not find an easy way to obtain the trace on a panic at first. I've by now learned about options which allow to dump the strace to flash. 4 - Gitweb tarball. Hence, I can no longer provide a SHA1, since it was an archive. As stated in my last email the best I can provide you with is the following string: Linux 2.6.39-rc6-next-20110506 5 - I think I've noted that the rfkill sysnode freezes as ifconfig, iwconfig, exit and others do. Now, under these new circumstances where all problems (apart from the button-triggered freeze) seem to have vanished, I can try both, writing to it again and running rfkill. I'll do so after I have dispatched this mail as I do reckon with new freezes and hardlocks. I will provide further information in another email just in a short while. regards, Cedric On Tue, May 10, 2011 at 12:57:01PM +0200, Arend van Spriel wrote: > On 05/09/2011 03:44 PM, Cedric Sodhi wrote: > > I use an HP Touchsmart tm2 laptop which has an onboard BRCM 4727- I used to compile my kernel with BCMSMAC module. > Hi Cedric, > > This story is quite erratic so I want to get some basic information first. > > 1) what linux distro are you using? > 2) what kernel version are you running (initially)? > > At first, I got regular kernel panics that, according to the printed-out stack originated somewhere from the BRCM driver and for which I could not exactly tell the reason (I assume it had something to do with roaming between APs). > 3) do you have any trace information on the 'regular kernel panics'? > > Also, the laptop has a dedicated button to activating/deactivating the WLAN device, besides it has a BIOS wired funtion key, that does the same - at least that what it does in Windows and what HP says it should do. > > > > When pressing either of the buttons, the kernel would hard-lock without any further notice and the computer could only be brought down through a hard reset. > > > > This was awful enough, so I though I could try enabling the rfkill kernel compoenent as it seems related (layman at work, as you can tell). Recompiling that way (linux-next, by the way, *not* on wireless-testing yet) and also modifiying another few minor settings resulted in a desaster: > 4) how did you obtain linux-next? git? when using git can you provide sha1? > > Since then - *even after I have reerted all changes and gone back to the kernel which was known to have worked last!!!* - as soon as the BCMSMAC module is either ocmpiled in or loaded, trivial commands such as ifconfig, iwconfig or just exit (!!!) freeze in a State D (awaiting IO) and can not be killed by even kill -9 or -1. > 5) could you try the 'rfkill' command? > > Gr. AvS > > -- > Almost nobody dances sober, unless they happen to be insane. > -- H.P. Lovecraft -- >