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Old 06-14-11, 01:00 PM   #138
alessandro_ufms
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Join Date: Jan 2009
Posts: 23
Default Re: Linux backlight driver

Still reproducible on 275.09.07.

I don't know if this is related with the problem but there is a warning on the system log:
WARNING: at drivers/video/backlight/backlight.c:314 backlight_device_register+0x1cd/0x210()
Hardware name: VPCCW27FX
nvidia_backlight: invalid backlight type
Modules linked in: nvidia_bl(+) aesni_intel cryptd aes_x86_64 aes_generic ipt_REJECT ipt_LOG xt_multiport xt_limit xt_tcpudp xt_addrtype xt_state ip6_tables nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_nat rfcomm nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack iptable_filter bnep ip_tables x_tables snd_hda_codec_hdmi uvcvideo usbhid videodev hid media v4l2_compat_ioctl32 btusb bluetooth snd_hda_codec_realtek nvidia(P) snd_hda_intel snd_hda_codec joydev snd_hwdep sg arc4 snd_pcm ecb snd_timer ath9k ehci_hcd usbcore mac80211 ath9k_common firewire_ohci firewire_core iTCO_wdt psmouse snd sdhci_pci sdhci mmc_core iTCO_vendor_support sky2 crc_itu_t serio_raw pcspkr ath9k_hw sony_laptop intel_ips soundcore i2c_i801 intel_agp intel_gtt snd_page_alloc i2c_core thermal evdev ath fuse video cfg80211 rfkill wmi ac button battery vboxnetadp vboxnetflt vboxdrv cpufreq_ondemand acpi_cpufreq freq_table processor mperf ext4 mbcache jbd2 crc16 uvesafb cn sr_mod cdrom sd_mod ahci libahci libata scsi_mod [last unloaded: nvidia_bl]
Pid: 16444, comm: modprobe Tainted: P W 2.6.39-ARCH #1
Call Trace:
[<ffffffff8105b8ef>] warn_slowpath_common+0x7f/0xc0
[<ffffffff8105b9e6>] warn_slowpath_fmt+0x46/0x50
[<ffffffff812e0439>] ? dev_set_drvdata+0x39/0x50
[<ffffffff81269f7d>] backlight_device_register+0x1cd/0x210
[<ffffffffa10a8000>] ? 0xffffffffa10a7fff
[<ffffffffa10a8351>] nvidia_bl_init+0x351/0x369 [nvidia_bl]
[<ffffffff81002040>] do_one_initcall+0x40/0x180
[<ffffffff8109b023>] sys_init_module+0xb3/0x200
[<ffffffff813e9b42>] system_call_fastpath+0x16/0x1b
---[ end trace 1ea678c9c95a37fa ]---
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