On Thu, 2015-02-19 at 15:20 +1100, Jol Valentine wrote: > Hi folks, > > I have a bug report for a Lenovo T440s. I know the "unsupported > brightness interface" has been reported numerous times, but from an > end user perspective I have two issues: > 1. once I 'logon' to the Linux desktop and the X display starts > (i.e. after the gnome logon screen) the brightness is set such > that the display is blank, and I have to use the brightness > keys (i.e in the T440s case F8) to increase the brightness to > I can see the desktop. > 2. If I have a second monitor plugged in the display stays blank > and I can't even see the gnome logon display screen at all. > > > Feb 19 14:23:25 Bosendorfer kernel: [ 7.543808] thinkpad_acpi: > ThinkPad ACPI Extras v0.25 > Feb 19 14:23:25 Bosendorfer kernel: [ 7.543810] thinkpad_acpi: > http://ibm-acpi.sf.net/ > Feb 19 14:23:25 Bosendorfer kernel: [ 7.543811] thinkpad_acpi: > ThinkPad BIOS GJET77WW (2.27 ), EC unknown > Feb 19 14:23:25 Bosendorfer kernel: [ 7.543813] thinkpad_acpi: > Lenovo ThinkPad T440s, model 20AQCTO1WW > Feb 19 14:23:25 Bosendorfer kernel: [ 7.544300] thinkpad_acpi: > Unsupported brightness interface, please contact > ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx > Feb 19 14:23:25 Bosendorfer kernel: [ 7.544371] thinkpad_acpi: > radio switch found; radios are enabled > Feb 19 14:23:25 Bosendorfer kernel: [ 7.544430] thinkpad_acpi: This > ThinkPad has standard ACPI backlight brightness control, supported by > the ACPI video driver > Feb 19 14:23:25 Bosendorfer kernel: [ 7.544431] thinkpad_acpi: > Disabling thinkpad-acpi brightness events by default... > Feb 19 14:23:25 Bosendorfer kernel: [ 7.545366] thinkpad_acpi: > rfkill switch tpacpi_bluetooth_sw: radio is unblocked > Feb 19 14:23:25 Bosendorfer kernel: [ 7.545690] thinkpad_acpi: > Console audio control enabled, mode: monitor (read only) > Feb 19 14:23:25 Bosendorfer kernel: [ 7.546796] input: ThinkPad > Extra Buttons as /devices/platform/thinkpad_acpi/input/input9 > > > I am running Debian Jessie (testing) > > Linux Bosendorfer 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt4-3 > (2015-02-03) x86_64 GNU/Linux > /proc/acpi/ibm/driver > driver: ThinkPad ACPI Extras > version: 0.25 > Hope this is the correct place to report this, > > In response to some of the reports the replies are that "Unsupported > brightness interface, " is a normal message and can be ignored, > and unlike some others who have reported, my F5,F6 keys to adjust the > brightness do work (although I think they were running experimental), > > so I'm at a bit of a loss as to what I can do to fix this, the second > display 'startup' issue is the real nuisance - I have to remember to > unplug the display when (re)booting. > > regards, > Jol. > Hello! Again, I'm one of those guys :). I'd type a response here but I already typed one just a minute ago, so I'll link you to that. There's an explanation of the issue and a couple solutions you can use: http://sourceforge.net/p/ibm-acpi/mailman/message/33520975/ Cheers, Lyude > > > ------------------------------------------------------------------------------ > Dive into the World of Parallel Programming The Go Parallel Website, sponsored > by Intel and developed in partnership with Slashdot Media, is your hub for all > things parallel software development, from weekly thought leadership blogs to > news, videos, case studies, tutorials and more. Take a look and join the > conversation now. http://goparallel.sourceforge.net/ > _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
