On Wed, Mar 26, 2008 at 04:19:34PM +0100, Jean Delvare wrote:
> Hi Ken,
>
> On Tue, 25 Mar 2008 20:07:14 +0000, Ken Moffat wrote:
> > Hi,
> >
> > on one of my boxes, I've got a problem with gdm and kernels newer
> > than 2.6.24 (tested on 2.6.24.2, 2.6.24.4). If I try to restart or
> > shut down from gdm, the window disappears but the X background remains
> > and the box stays in runlevel 5 until I switch to a tty and shut it
> > down (as root) or give it a 3-fingered salute to reboot.
>
> I have to admit that I am very skeptical. The i2c-viapro driver deals
> with the motherboard's SMBus. It's not related in any way to gdm nor
> drm, so I just can't see how it could cause the problem you report.
> What gave you the idea to try unloading this driver?
Your skepticism seems reasonable. I tried this after I went back
to the "bad" 2.6.24.4 (to see if there was anything in the X log)
only to discover it was now shutting sown ok. I knew I had
forgotten to change the extraversion when I reverted the patch, so
I figured it must be something in the modules (i.e. the good ones
overwrote the bad ones - dunno if they all load or not).
After going back to 2.6.24.2 where I'd first seen this, I had a
look at what was loaded - only r8169, w83627hf with hwmon_vid, and
i2c_viapro. I tried hwmon_vid and w83627hf but it didn't help.
Then I tried i2c_viapro and it seemed to fix it.
>
> Do you have I2C or SMBus devices connected to the SMBus on that machine?
> If you don't know, i2cdetect should tell.
After modprobing i2c-dev I get
[EMAIL PROTECTED] /home/ken #i2cdetect -l
i2c-0 i2c monid I2C
adapter
i2c-1 i2c dvi I2C
adapter
i2c-2 i2c vga I2C
adapter
i2c-3 i2c crt2 I2C
adapter
i2c-4 smbus SMBus Via Pro adapter at 0400
SMBus adapter
[ nothing shows on 1 ]
[EMAIL PROTECTED] /home/ken #i2cdetect 2
WARNING! This program can confuse your I2C bus, cause data loss and
worse!
I will probe file /dev/i2c-2.
I will probe address range 0x03-0x77.
Continue? [Y/n]
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
[ othing shows on 3 ]
[EMAIL PROTECTED] /home/ken #i2cdetect 4
WARNING! This program can confuse your I2C bus, cause data loss and
worse!
I will probe file /dev/i2c-4.
I will probe address range 0x03-0x77.
Continue? [Y/n]
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 2f
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: 50 51 -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- 69 -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
>
> You say that your 32-bit and 64-bit configs are very different. It
> might be interesting to get them to match as much as possible. This
> could either point at a 64-bit specific problem, or isolate a kernel
> configuration option which causes the problem.
>
I'll have a look at that.
[...]
>
> This brings a question: how many times (out of how many tries) did you
> manage to fix your 2.6.24.x kernel with "rmmod i2c-viapro"? If it's
> just 1 our of 1 try, it could be just luck? Did you try to rmmod any
> other driver?
>
I think it was 2 or 3 times, but as I already said, my notes say I
managed to shutdown 2.6.25-rc6-git8 once, but I can't replicate
that.
Funnily enough, earlier today I was using what I thought was a
fixed 2.6.24.4 kernel (with the drm patches reverted) and gdm hung
again. Maybe it is something else entirely. All I know for certain
is that I didn't see the problem with vanilla 2.6.24.
Ken
--
das eine Mal als Tragödie, das andere Mal als Farce
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