On Tue, 01 Nov 2011, Peer Heinlein wrote: > If the battery is empty and the system is in aggressive powersave mode, > the screen becomes black if I plug in the power cable. Looks like the This is probably a bug on the gpu driver. Not something I can help much with. > [ 300.752879] [Hardware Error]: Machine check events logged This is nasty, and unfortunately also something I cannot help with, in fact I have no idea what part of the kernel logs this. Might be MCE, but I don't know where it is logging to :-( It could be a reflex of whatever is causing the issue, e.g. the PCIe bus is not happy for some reason. OTOH, a new kernel just might fix the two issues, ask the SuSE guys if they have the latest fixes backported to an experimental kernel or somesuch. You can also ask around in the linux-thinkpad ML, they might know of a workaround to the gpu issue. > [ 307.790734] thinkpad_acpi: unknown possible thermal alarm or keyboard > event received > [ 307.790760] thinkpad_acpi: unhandled HKEY event 0x6040 This you can ignore, it is harmless. I can give you two generic hits: one: make sure your firmware is up-to-date, firmware updates have fixed this kind of problem in the past on some other thinkpads. two: this could well be bad ASPM interactions between Linux and the thinkpad firmware, this is an area Matthew Garrett is explicitly working to fix. There are command-line parameters to work around this I think (but they might require a patch). Ask the SuSE kernel team for help. Try to give the kernel the "pcie_aspm=force" command-line parameter (through the bootloader), if it works on your kernel, it just might help. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
