2.6.27-11 + EeePC 1000H = unstable

[Jacques]

Hi,

I'm running 8.10 on an EeePC 1000H witth a custom OCZ core V2 120GB SSD disk. Every thing worked well util I upgraded to version 2.6.27-11. I had the following symptoms :

* Black screen after resuming from suspend to memory and total system freeze.
* Unresponsiveness of X applications after resuming a screensaver session before total freeze of the system.
* The last weirdness was the most interesting. I never had any interesting kernel messages with dmesg but I had an application that was impossible to kill even with the -9 signal. "ps aux" reported that it was in "D" state as shown below :

root 10114 0.0 0.0 2248 832 ? D 13:40 0:00 /sbin/dhclient -d -sf /usr/lib/NetworkManager/nm-dhcp-client.action -pf /var/run/dhclient-eth0.pid -lf /var/run/dhclient-eth0.lease -cf /var/run/nm-dhclient-eth0.conf eth0

According to the docs, "D" state means that the process is waiting for some IO to complete. It cannot be killed. When I tried to logout and restart a new X session, the system completely froze.

I built a custom 2.6.28.4 kernel with kernelcheck and I had the same problems. So I reverted to the old 2.6.27-9 which remains rock stable.

Seems that there is some regression starting from 2.6.27-11.

Cheers,
Jacques

[Jacques (jacques-eavr)]

Hi,

I have some news about this issue. Finally it seems not be linked with the kernel but with the intel Xorg driver...

Situation that seems to trigger the freeze :

* run this script with something connected to the VGA connector :
xrandr --output LVDS --mode 800x600
xrandr --output VGA --mode 800x600
* disconnect the VGA plug
* wait for the screensaver to turn off the LCD blacklight

-> _sometimes_ the computer will never wake up again. It is a hard crash, i.e. the kernel is frozen (e.g. if you unplug a USB optical mouse and if you plug it again, it will not light up, so there is no more kernel USB initialization activity).

This bug has a very rare occurrence rate so I waited long enough to have some relevant additional informations. Hope it can help.

Jacques

[^_Pepe_^ (jose-angel-fernandez-freire)]

This bug was reported a while ago and there hasn't been any activity in
it recently. We were wondering if this is still an issue? Can you try
with the latest Karmic 9.10 release of Ubuntu? ISO CD images are
available from http://cdimage.ubuntu.com/releases/ .

If the issue remains, could you run the following command from a
Terminal (Applications->Accessories->Terminal) while running Karmic. It
will automatically gather and attach updated debug information to this
report.

apport-collect -p linux 328725

Thanks in advance

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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