On Thu, 13 May 2010, Mark Peter Wege wrote: > 2010-05-13 15:29:41 caprica kernel [ 13.362662] thinkpad_acpi: > ThinkPad BIOS 1WET90WW (2.10 ), EC 1VHT28WW-1.04 > 2010-05-13 15:29:41 caprica kernel [ 13.362664] thinkpad_acpi: IBM > ThinkPad R50e, model 1834J8G > [...] > 2010-05-13 15:29:41 caprica kernel [ 13.376976] thinkpad_acpi: > brightness: will use unverified default: brightness_mode=3 > I just wanted to give you the feedback that it does not work well on my > thinkpad. It is to dark, like it would ok when running on battery. I have to > correct it on every boot manually. Hmm, ok. We will have to do two simple tests. There are two possibilities: 1) it is better to use the UCMS method (brightness_mode=2) and 2) the default (brightness_mode=3) works, but userspace is doing something nasty. > Can you give me advice how to change it permanently? Please consider that I am > not subscribed to this list and add me to the CC if you answer to the list. Heh, if anything, you might actually have to ask me to *stop* CC'ing you. The netiquete on all Linux kernel work is to always CC everyone ;-) Please do two tests and send me the results. To do these tests, all you have to do is to pass some parameters to the thinkpad-acpi module, and send me *all* kernel log lines that start with "thinkpad_acpi". Test 1: Enable the debug mode, reboot, change the brightness level (using the keys) to the one you want, reboot again. How to enable debug mode: give thinkpad-acpi the "debug=0xffff" parameter. To do that: a) if it is a module: edit any files with "options thinkpad-acpi" or "options thinkpad_acpi" under /etc/modprobe.d/ and add the debug=0xffff parameter to the option line. If there are no files like that, you can create one: echo 'options thinkpad_acpi debug=0xffff' > /etc/modprobe.d/thinkpad-acpi b) if it is compiled in your kernel, you will have to tell grub/lilo to add this to the kernel command line: thinkpad_acpi.debug=0xffff Test 2: Same as test 1, but we will use "UCMS mode". Do the same as in test 1, but you will have to give two parameters to thinkpad-acpi: the debug=0xffff parameter, and also the brightness_mode=2 parameter. If we find out that brightness_mode=2 works well for you, all you have to do is to keep that parameter, and remove the debug=0xffff parameter. Should that happen, I will add an entry to the driver to change the default in future versions. -- "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 ------------------------------------------------------------------------------ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
