Hi lfs users,
Could I tap into the collected wisdom of your learned selves please?
I'm currently doing my first lfs build, completed chs 5 and 6, trying to
get my head around the kernel drivers stuff. Running Debian Jessie/xfce
on my trusty AMD 4200+, everything going well so far. However, I have
had to stop at this point as I have problems with the displays connected
to this machine: they keep trying to auto input and search for
analogue/digital displays, resulting in continuous blanking and searching.
I know from the forums that this is common behaviour, but the questions
get asked, answered and then go away, so I assume that the solutions
work most times. Following the general advice, I used to be able to use
the menu buttons to specify manual input which would stabilize the
monitor for a few days, but the issue always reoccurred.
If I 'top' during the problem, I always see ksoftirq/0 or /1 running at
about 6% CPU (sometimes quite a bit more) and consider this an
indication that there is a process hammering away at the display. I
have considered using the Samsung driver, but cannot find this
particular model (SyncMaster 2333, no extra letters; I don't want to
make the problem worse) on their support pages. Furthermore, I get very
similar issues with a Cibox monitor, but that puts itself to sleep
sometimes and then won't wake up and I have to reboot with the Samsung
monitor. I believe I can trace this behaviour back to a
kernel-header/firmware update on two machines running Scientific Linux
6.6 about 2 years ago: the monitors had been paired to those machines
for years, running a number of distributions without any problems and
they both started behaving like after the same update (the Cibox will
scroll continuously through full-screen RGBW even when not attached to
any machine at all!) . The behaviour appears to travel with the
monitors as I can reproduce it by connecting them to other
(trouble-free) machines.
It seems foolish to risk compiling this nonsense into the new lfs kernel
and so I was hoping someone somewhere would recognize this behaviour and
point me in the right direction with regard to a better choice of
configuration and modules than is being used by the debian kernel. If
you need any specific hardware information, please ask (the bash
commands would be very useful). I would post the output of lshw, but a)
I feel that this post is long enough already and b) it does seem like a
lot of information to be putting into the public domain.
Thanks for your time.
fraser
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