Several Different kernel related (?) problems
Alan Cox
alan at redhat.com
Fri Aug 13 11:40:54 UTC 2004
On Fri, Aug 13, 2004 at 11:32:39AM +0200, Hans Kristian Rosbach wrote:
> On these we have recently seen the following problems.
>
> 1. Screen goes blank during boot menu.
> Then there is massive on-screen image corruption until
> the fb is reset by init somewhere. In the beginning you
> can make out the text, but there are outlined squares all
> over the monitor. When more text appears it seems to make
> a mess all over the screen.
> What kernel: All FC2 kernels, ever since atleast test1
The first thing to try is "acpi=off". See if that helps.
> 3. All of our FC2 servers recently (3-4 days ago) stopped serving
> http pages to mac computers. I have no idea why, but customers
> from all over is complaining that their mac machines cannot
> open the webpages. Windows machines on the same net works.
> The mac machines has tested IE and newest Safari.
> It seems like a FC2 yum update triggered this event, but we have
> no idea how and have no way of doing testing as we don't have any
> macs.
Old or new Macs. MacOS X and MacOS < X are different operating systems.
MacOS X is simply BSD. You'd need tcpdumps to figure out what was going
on there.
> 4. One of our servers is having BIG problems with uneven intervals
> recently. The last week it has had problems about 5-6 times I think.
> Very (VERY) suddenly the load increases to 700+ and https gets OOM
> killed rapidly. Network connectivity is immedeately offline and
> console responce is _BAD_. I once waited 5min for a password prompt
> before I had to reboot it due to customer complaints.
> I saw the 700-900 load climb once when I had let top stay on console.
> This has occured only since after Monday.
Bad cgi scripts or perl/php ?. You can stop the machine getting into a
horrible state by using rlimit and/or setting no overcommit in /proc/sys.
Alan
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