On Fri, 11 Oct 2013, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote: > On Thu, 10 Oct 2013, Fred New <fred.new2911@xxxxxxxxx> wrote: >> I have found that I need to use i915.invert_brightness=1 for my HP >> Envy 17 with a Haswell processor (i7-4702MQ). The lspci command shows >> the following information about this device: > > I am surprised... until recently [1] we've only seen this on gen4 Acer > based laptops. > > Please file a new bug on DRM/Intel at [2], and attach the same info as > requested in comment #1 of [1]. Thanks. Fred, did you end up filing the bug? I don't think I saw one... Please try video.use_bios_initial_backlight=0 module parameter (without i915.invert_brightness). Does that help? BR, Jani. > > BR, > Jani. > > > [1] https://bugs.freedesktop.org/show_bug.cgi?id=70256 > [2] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI > > >> $ lspci -v -s 00:02.0 >> 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core >> Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA >> controller]) >> Subsystem: Hewlett-Packard Company Device 1968 >> Flags: bus master, fast devsel, latency 0, IRQ 43 >> Memory at d3000000 (64-bit, non-prefetchable) [size=4M] >> Memory at c0000000 (64-bit, prefetchable) [size=256M] >> I/O ports at 6000 [size=64] >> Expansion ROM at <unassigned> [disabled] >> Capabilities: <access denied> >> Kernel driver in use: i915 >> >> Operating system information: >> Fedora 20 (beta) >> Linux kernel version 3.11.3 >> >> Please let me know if you need any additional information. >> >> Best regards, >> Fred New >> _______________________________________________ >> dri-devel mailing list >> dri-devel@xxxxxxxxxxxxxxxxxxxxx >> http://lists.freedesktop.org/mailman/listinfo/dri-devel > > -- > Jani Nikula, Intel Open Source Technology Center > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/dri-devel -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
