Red Hat Bugzilla – Bug 474357
F10: system frozen on login screen
Last modified: 2009-12-18 02:07:23 EST
Description of problem:
System is often frozen on login screen.
Booting to init 3 to get a text login yields the same result.
Version-Release number of selected component (if applicable):
(but it doesn't seem to be x86_64 specific.)
About 3 times in 5 tries, but it depends a lot. Sometimes, I can login on the first try, and sometimes I need up to ten tries to get a responsive system.
Steps to Reproduce:
1. Boot system.
(Rebooting, on the other hand, never hit the bug on my system.)
System frozen on gdm (or text login) screen. Keyboard and touchpad inputs are ignored.
But the system isn't completelly dead. Pressing the power button will bring the shutdown window. I can't click it, but waiting 60 seconds will give a clean shutdown.
Video: Intel 965.
Wireless: Intel 3945.
This seems to be related to iwl3945. Please check this thread:
This patch is likely to fix the issue:
Also, I mentioned this in bug #473542, but created this report to avoid mixing different issues.
If more information is needed, please let me know and I'll reply as soon as possible. Also, I'm willing to test any kernel updates that might come.
It seems that dynamic ftrace is broken on kernel 2.6.27 and is causing my issues. Can we get a .28 kernel or a .27 kernel with ftrace disabled?
Created attachment 325633 [details]
dmesg of a boot that resulted in irresponsive system
Disabling wifi in BIOS avoids system freezing. Also, the freezing starts right in the beggining of the boot - pressing ESC in Plymouth boot screen is ignored too.
The attachment is my /var/log/dmesg.old.
Too early to talk. System has hung today with wifi disabled in BIOS. Again, the power button was responsive (raised the shutdown window, etc), but nothing else.
It seems that if the system is off for a long time, it's hard to get a functional boot. On the other hand, when I get a good boot, the system works great.
I have talked to Pedro Matiello (in off) we have the same laptop (Dell Vostro 1310) and I'm having the same issue here. Simply the keyboard and touchpad don't work sometimes. Yes, I said sometimes and the most of times.
The basic behavior is that when you turn on the laptop, the most of times the F10 system is not able to find the input devices and it forces you, either to plug external USB devices or turn off the machine using the power button.
If you use a external USB mouse it works fine. Although I don't have a USB keyboard to test it here at this moment.
After some research on the web I realized that it possibly can be related with the uvdev input feature in F10. By the way, I have tried a lot of kind of configuration cited on  and , but no luck until now.
I'm going to attach some config files and hopefully it will help in something.
Created attachment 326237 [details]
Xorg.conf generated by Xorg -configure and included the AutoAddDevices option.
Created attachment 326238 [details]
Created attachment 326240 [details]
Created attachment 326242 [details]
(In reply to comment #1)
> It seems that dynamic ftrace is broken on kernel 2.6.27 and is causing my
> issues. Can we get a .28 kernel or a .27 kernel with ftrace disabled?
That was disabled long ago in Fedora. What makes you think it's enabled?
Is this log from a working session or from a broken one? It looks completely normal to me, with all the devices being added properly
Try Option "AutoAddDevices" "off" in the ServerLayout though, just for a check.
If you get a good boot right after a failed one, the file /var/log/dmesg.old will have the log from the failed boot.
Hello, Chuck. I believed it was ftrace because of a bug in Ubuntu (caused by a
combination of ftrace and iwl3945) that produced exactly the same symptoms. As
iwl3945 seemed to be related to my issue (booting with wifi disabled in BIOS
increased somehow my chances of getting a good boot, but that might have been
just luck), I wrongly concluded that the bug was the same. Sorry for that.
I did a clean reinstall here (kept only /home) and the bug is still present.
For now, I've been using suspend to avoid hitting the bug, but that's
definitely not optimal.
The dmesg.old I uploaded before is from a failed boot.
Created attachment 326247 [details]
dmesg.old from a boot failed
Created attachment 326248 [details]
Those two files above were created even using Option "AutoAddDevices" "off" in the ServerLayout section.
$ grep serio dmesg_bad.txt
serio: i8042 KBD port at 0x60,0x64 irq 1
$ grep serio dmesg_good.txt
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input5
input: PS/2 Mouse as /devices/platform/i8042/serio1/input/input7
input: AlpsPS/2 ALPS GlidePoint as /devices/platform/i8042/serio1/input/input8
As the most of times this issue makes the whole system unable to be use, I'm changing the priority of it.
Thank you for the cooperation.
Blaming the kernel for this one, the input devices don't even show up in the dmesg output when it fails.
Peter, thank you for the explanation.
Well, I have tried three different kernels until now and no luck.
* 18.104.22.168-144.fc10.x86_64 (on koji right now)
The dmesg diff between the failed and succeed boot is the same as above on comment #16.
It appears I'm hitting the same thing on my T43p. Keyboard input works early in boot process (e.g. typing in LUKS password) but once I hit GDM no input devices work. The built-in keyboard and mouse work (along with a USB keyboard/mouse) if I go into runlevel 3, but nothing works once X starts.
What's strange is that my laptop was working perfectly until I did updates last night and rebooted this morning. Booting into the pre-update kernel (22.214.171.124-117.fc10.i686) hasn't helped.
Looks like I fixed this (at least what I am hitting) by downgrading from hal-info-20081022-2.fc10.noarch to hal-info-20081022-1.fc10.noarch.
Before downgrading hal-info in my testing, I also reverted kernel-firmware-126.96.36.199-134.fc10 to kernel-firmware-188.8.131.52-117.fc10.noarch. So it's possible that's also related to the fix, even though by itself didn't work.
This is a me too. I am experiencing hangs on my Lenovo T60. It is odd that it doesn't happen at home, but it happens reliably on the RH wireless routers. It happened to me in Westford and Atlanta offices. I am running 184.108.40.206-134.fc10.x86_64 now. I have noticed I get a message from NetworkManager right as the hang happens.
I am still experiencing the hang. I am running the 220.127.116.11-159.fc10.x86_64 kernel. I have noticed it only happens with WEP encryption. I have several WPA based places I connect and I have no trouble.
It looks like there's a fix in 2.6.30 and a workaround for previous kernels is to add the "i8042.reset" kernel option:
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