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Description of problem: Using function keys, Gnome control nor putting arbitrary values into /sys/class/backlight/acpi_video*/brightness will not change LCD backlight brightness. Version-Release number of selected component (if applicable): kernel-3.6.6-3.fc18.x86_64 How reproducible: Always. Steps to Reproduce: 1. Install Fedora 18 on Lenovo E335 2. Try to adjust LCD brightness Actual results: No change. Expected results: Dimming/intensifying of the LCD backlight brightness. Additional info: [ivo@l2ppar ~]$ lspci 00:00.0 Host bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Complex 00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Device 9808 00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI Wrestler HDMI Audio [Radeon HD 6250/6310] 00:04.0 PCI bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Port 00:05.0 PCI bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Port 00:07.0 PCI bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Port 00:10.0 USB controller: Advanced Micro Devices [AMD] FCH USB XHCI Controller (rev 03) 00:11.0 SATA controller: Advanced Micro Devices [AMD] FCH SATA Controller [IDE mode] (rev 40) 00:12.0 USB controller: Advanced Micro Devices [AMD] FCH USB OHCI Controller (rev 11) 00:12.2 USB controller: Advanced Micro Devices [AMD] FCH USB EHCI Controller (rev 11) 00:13.0 USB controller: Advanced Micro Devices [AMD] FCH USB OHCI Controller (rev 11) 00:13.2 USB controller: Advanced Micro Devices [AMD] FCH USB EHCI Controller (rev 11) 00:14.0 SMBus: Advanced Micro Devices [AMD] FCH SMBus Controller (rev 14) 00:14.2 Audio device: Advanced Micro Devices [AMD] FCH Azalia Controller (rev 01) 00:14.3 ISA bridge: Advanced Micro Devices [AMD] FCH LPC Bridge (rev 11) 00:14.4 PCI bridge: Advanced Micro Devices [AMD] FCH PCI Bridge (rev 40) 00:14.5 USB controller: Advanced Micro Devices [AMD] FCH USB OHCI Controller (rev 11) 00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43) 00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1 00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2 00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3 00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4 00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6 00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5 00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 07) 02:00.0 Network controller: Broadcom Corporation BCM43228 802.11a/b/g/n 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01) [ivo@l2ppar ~]$ lsmod Module Size Used by fuse 77993 3 ebtable_nat 12807 0 ipt_MASQUERADE 12880 1 nf_conntrack_netbios_ns 12665 0 nf_conntrack_broadcast 12527 1 nf_conntrack_netbios_ns ip6table_mangle 12700 1 ip6t_REJECT 12939 2 nf_conntrack_ipv6 14530 23 nf_defrag_ipv6 18177 1 nf_conntrack_ipv6 iptable_nat 13383 1 nf_nat 25414 2 ipt_MASQUERADE,iptable_nat iptable_mangle 12695 1 bnep 19584 2 bluetooth 317602 7 bnep nf_conntrack_ipv4 14969 22 nf_nat,iptable_nat nf_defrag_ipv4 12673 1 nf_conntrack_ipv4 xt_conntrack 12760 42 nf_conntrack 84045 8 nf_conntrack_netbios_ns,ipt_MASQUERADE,nf_nat,xt_conntrack,nf_conntrack_broadcast,iptable_nat,nf_conntrack_ipv4,nf_conntrack_ipv6 ebtable_filter 12827 0 ebtables 30757 2 ebtable_nat,ebtable_filter ip6table_filter 12815 1 ip6_tables 26942 2 ip6table_filter,ip6table_mangle be2iscsi 81803 0 iscsi_boot_sysfs 15641 1 be2iscsi bnx2i 54682 0 cnic 62653 1 bnx2i uio 19044 1 cnic cxgb4i 32879 0 cxgb4 108492 1 cxgb4i cxgb3i 32950 0 cxgb3 155601 1 cxgb3i mdio 13398 1 cxgb3 libcxgbi 56447 2 cxgb3i,cxgb4i ib_iser 37812 0 rdma_cm 42166 1 ib_iser ib_addr 13745 1 rdma_cm iw_cm 18221 1 rdma_cm ib_cm 41725 1 rdma_cm ib_sa 32955 2 rdma_cm,ib_cm ib_mad 46340 2 ib_cm,ib_sa ib_core 73894 6 rdma_cm,ib_cm,ib_sa,iw_cm,ib_mad,ib_iser iscsi_tcp 18333 0 libiscsi_tcp 24128 4 cxgb3i,cxgb4i,iscsi_tcp,libcxgbi libiscsi 50542 8 libiscsi_tcp,bnx2i,cxgb3i,cxgb4i,be2iscsi,iscsi_tcp,ib_iser,libcxgbi scsi_transport_iscsi 57490 8 bnx2i,be2iscsi,iscsi_tcp,ib_iser,libcxgbi,libiscsi microcode 23446 0 snd_hda_codec_realtek 78081 1 uvcvideo 80922 0 videobuf2_vmalloc 12967 1 uvcvideo videobuf2_memops 13354 1 videobuf2_vmalloc videobuf2_core 34237 1 uvcvideo videodev 119976 2 uvcvideo,videobuf2_core i2c_piix4 13914 0 k10temp 13126 0 media 20444 2 uvcvideo,videodev snd_hda_codec_hdmi 36232 1 snd_hda_intel 37618 5 snd_seq 64844 0 snd_hda_codec 126889 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel snd_seq_device 14136 1 snd_seq snd_hwdep 17650 1 snd_hda_codec snd_pcm 97459 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel lib80211_crypt_tkip 17662 0 wl 2600657 0 cfg80211 196846 1 wl snd_page_alloc 18101 2 snd_pcm,snd_hda_intel r8169 67600 0 lib80211 13968 2 wl,lib80211_crypt_tkip mii 13527 1 r8169 snd_timer 28690 2 snd_pcm,snd_seq thinkpad_acpi 79408 0 snd 79242 20 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_hda_codec,snd_hda_intel,thinkpad_acpi,snd_seq_device soundcore 14491 1 snd rfkill 21384 6 cfg80211,thinkpad_acpi,bluetooth vhost_net 33859 0 tun 22938 1 vhost_net macvtap 18240 1 vhost_net macvlan 18731 1 macvtap kvm_amd 55563 0 binfmt_misc 17463 1 kvm 419458 1 kvm_amd uinput 17673 0 radeon 895780 3 i2c_algo_bit 13257 1 radeon drm_kms_helper 44701 1 radeon ttm 79760 1 radeon drm 255010 5 ttm,drm_kms_helper,radeon i2c_core 38314 6 drm,i2c_piix4,drm_kms_helper,i2c_algo_bit,radeon,videodev wmi 18697 0 video 18936 0 [ivo@l2ppar ~]$
The kernel-3.7.7-201.fc18.x86_64 seems to have support for that functionality.
(In reply to comment #1) > The kernel-3.7.7-201.fc18.x86_64 seems to have support for that > functionality. Does that mean your issue is fixed with 3.7.7?
Yes.
Issue persists in kernel 3.8.2-206.fc18.x86_64. I have a Dell Latitude E6530 and have the exact same issue. Tried xbacklight, nvidia blob (with EnableBrightnessControl, this used to work in Fedora 17), nouveau drivers up to latest updates-testing (1.0.6-4.fc18), acpi_backlight=vendor. 'xev' does not even register the XF86MonBrightnessUp and XF86MonBrightnessDown keystrokes. Other Fn keys (like PrintScreen) are working just fine. I am using the LXDE spin. As said, Fedora 17 (used up to kernel 3.6, don't know about 3.7) worked without issue.
Issue persists Linux sentiono 3.8.2-206.fc18.x86_64 #1 SMP Fri Mar 8 15:03:34 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux And it has been problems since F18 released. It seems that F18 has more problems than F17. If not due to decision by RedHat to change the upgrade system from F18 onward, I would have stick with F17. I am using Acer Travelmate 8481TG, NVidia GT520M and Intel.
Issue persists on Linux sentiono 3.8.3-201.fc18.x86_64 #1 SMP Thu Mar 14 21:28:05 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Brightness Function keys still not working.
Hi. The problem about function keys also persists with 3.8.5-201.fc18.x86_64 #1 SMP Thu Mar 28 21:01:19 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
For those of you that don't have identical hardware to the original reporter and are still seeing this issue on 3.9.y kernels, please open a new bug with the relevant details.