Red Hat Bugzilla – Bug 109393
strange interaction between acpi / rhgb
Last modified: 2015-01-04 17:03:49 EST
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) Opera
Description of problem:
If I turn on acpi on grub, 6 out of 10 boots the X (gdm) envirnoment
doesn't come up... somewhere along the boot (init) process the whole
machine freezes up.
I tried adding: pci=noacpi on grub, still had the same problem, I
tried apm=off, I tried turning off dpms on X, I tried even turning
acpid off, but it computer would always freeze up.
If I turn acpi=off on grub the computer works like a charm.
The weird thing is that it doesn't happen all the time, usually,
after a freeze (with acpi on), the next reboot will work, and I can
see my battery status working properly.
I had RH 9 running on kernel 2.4.22 for 3 weeks now, and never had a
problem, so I know it is not something wrong with the Dell BIOS,
which by the way is version A023
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.add acpi=on on grub.conf
3.and watch it freeze up
Actual Results: computer freezes... I even try pinging it, but
nothing happens, it is a complete lock up.
Expected Results: X (gdm) should start
I am running a DELL Inspiron 5100, BIOS A023, with a PCMCIA DWL-650
wireless network card, ATI Radeon Mobile 7500, 512 MB of RAM
I have done more work on this, and after recompiling the kernel that
comes with Fedora 1 (2.4.22) with ACPI support in the kernel (not as a
module). The system worked fine, but then I realized that I had to
re-compile pcmcia-cs, I downloaded the the lastest source from
sourceforge, and after compiling it and installing it... boom! The
laptop started freezing up again.
So, whatever this problem is has to do with pcmcia-cs and acpi
support. and like I said before, that worked fine on RH 9.
More information... this time I have some good news.
ACPI is working 10 out 10 right now with PCMCIA, but I had to turn
off the rhgb (redhat boot screen)... for some reason that is
affecting ACPI and making the laptop to freeze up.
That's really bizarre, as rhgb isn't doing anything particularly special.
I'm having the same problem on my Dell Latitude d600.
Laptop freezes in graphical startup, but not in text.
Only happens when acpi=on in grub.
is this the same as Bug #109869 ?
if so, apparently, unplugging pcmcia cards during boot also
(temporarily) solves the problem. I'ven't tried it yet, though.
does rhgb + acpi still hang when running an updated kernel, say FC2?
using fedora 1 with kernel 2.6... it did... not sure with FC2,
waiting for final release.
how recent was the 2.6 kernel that still fails?
did removing the pcmcia card until after login help?
I understand that taking my pcmcia card solves the problem... but
that is not a real solution. I can boot windows, red hat 9, or any
other linux version with my pcmcia plugged... fedora shouldn't be any
I ran kernel 2.6.0 and 2.6.1 - I have tried any new versions lately.
errata: I meant... I haveN'T tried any other new version.
*** Bug 109505 has been marked as a duplicate of this bug. ***
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem
The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases,
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/
> If I turn acpi=off on grub the computer works like a charm.
try "acpi=on nolapic" and see it if works like a charm.
if it yes , you are another apic victim, you have to disable local
apic seems linux and windows ?! work well without them