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
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