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 Post subject: Samsung R525, FN keys for brightness control doesn't work
PostPosted: 11/12/2010, 15:13 
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Joined: 10/12/2010, 20:13
Posts: 2
Hello guys!

I'm French and this is my first message in English, I do not dominate the language, excuse me for errors that may occur in the text :-[
I installed only Ubuntu 10.04 LTS - 64 - Lucid Lynx on my new Samsung R525.
I completely uninstalled Windows 7 and i formated the HDD for Linux ( /, /home, /swap )

The features of my hardware are:
AMD Athlon II (Dual-Core M320), F= 2.1GHz, RAM= 3Go, HDD= 320Go
Video Card : ATI RS880M (seen in Bios), ATI Mobility Radeon HD5470 (in Samsung doc)
BIOS Information
Vendor: Phoenix Technologies Ltd.
Version: 03NS
Release Date: 04/10/2010
Address: 0xE4000
Runtime Size: 112 kB
ROM Size: 1024 kB
BIOS Revision: 3.0

The kernel at the first install is 2.6.32-21 and the FN +up & FN+down for brightness control doesn't work.

I added repository followed the instructions in this thread : viewtopic.php?f=3&t=296

The kernel and three softwares were installed :
linux-headers-2.6.32-26-generic
samsung-tools (1.1.4~ppa1~loms~lucid)
samsung-backlight (0.13.2~ppa1~loms~lucid)
easy-slow-down-manager (0.13.2~ppa1~loms~lucid)

but the FN +up & FN+down for brightness control doesn't work.

It just had a kernel update, I switched to version : 2.6.32-27-generic, but still brightness control doesn't work.

The output of the 2 commands :
sudo dmidecode -s system-product-name = R425/R525
lspci -nn  :
00:00.0 Host bridge [0600]: Advanced Micro Devices [AMD] RS780 Host Bridge Alternate [1022:9601]
00:02.0 PCI bridge [0604]: Advanced Micro Devices [AMD] RS7Thanks for the great job you did for us on Linux.80 PCI to PCI bridge (ext gfx port 0) [1022:9603]
00:04.0 PCI bridge [0604]: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 0) [1022:9604]
00:05.0 PCI bridge [0604]: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 1) [1022:9605]
00:06.0 PCI bridge [0604]: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2) [1022:9606]
00:11.0 SATA controller [0106]: ATI Technologies Inc SB700/SB800 SATA Controller [AHCI mode] [1002:4391]
00:12.0 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller [1002:4397]
00:12.1 USB Controller [0c03]: ATI Technologies Inc SB700 USB OHCI1 Controller [1002:4398]
00:12.2 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB EHCI Controller [1002:4396]
00:13.0 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller [1002:4397]
00:13.1 USB Controller [0c03]: ATI Technologies Inc SB700 USB OHCI1 Controller [1002:4398]
00:13.2 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB EHCI Controller [1002:4396]
00:14.0 SMBus [0c05]: ATI Technologies Inc SBx00 SMBus Controller [1002:4385] (rev 3c)
00:14.2 Audio device [0403]: ATI Technologies Inc SBx00 Azalia (Intel HDA) [1002:4383]
00:14.3 ISA bridge [0601]: ATI Technologies Inc SB700/SB800 LPC host controller [1002:439d]
00:14.4 PCI bridge [0604]: ATI Technologies Inc SBx00 PCI to PCI Bridge [1002:4384]
00:14.5 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB OHCI2 Controller [1002:4399]
00:18.0 Host bridge [0600]: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] HyperTransport Configuration [1022:1200]
00:18.1 Host bridge [0600]: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Address Map [1022:1201]
00:18.2 Host bridge [0600]: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] DRAM Controller [1022:1202]
00:18.3 Host bridge [0600]: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Miscellaneous Control [1022:1203]
00:18.4 Host bridge [0600]: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Link Control [1022:1204]
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Manhattan [Mobility Radeon HD 5000 Series] [1002:68e0]
01:00.1 Audio device [0403]: ATI Technologies Inc Manhattan HDMI Audio [Mobility Radeon HD 5000 Series] [1002:aa68]
02:00.0 Network controller [0280]: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01)
04:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller [11ab:4354]


As that does not work I tried also: xbacklight (seen here in french :http://doc.ubuntu-fr.org/retro-eclairage)

The command xbacklight = 50, sends me the following result :

X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 155 (RANDR)
Minor opcode of failed request: 13 (RRChangeOutputProperty)
Value in failed request: 0x89
Serial number of failed request: 16
Current serial number in output stream: 17


These are the results of my fruitless search!
I hope soon to control the backlight on my R525.
@ Voria:
Thanks for the great job you did for us on Linux.
What do you advise me to do to solve this problem?


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