Sony Vaio SVE1511 - a faixa de brilho da tela é maior no Linux do que no Windows

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Eu tenho um problema curioso no laptop sony vaio sve1511. Eu descobri que no linux (por exemplo, no último ubuntu 16) eu posso escurecer muito mais a tela do que no windows. Para demonstrar, tirei duas fotos com o brilho mais baixo possível no windows (10) e no Ubuntu (16). Fotos foi tirada no modo manual 1/20, 1,8, iso 800, e como você pode ver no linux eu posso escurecer a tela muito mais ... Laptop tem placa ATI 7500 / 7600M. No Windows 10 eu tenho drivers mais recentes, eu tentei drivers mais antigos do site da Sony, mas eu não consigo tela tão brilhante quanto no linux.

O problema é que o brilho mínimo da tela no Windows é um pouco demais para mim - seria melhor para os meus olhos se eu pudesse escurecer a tela um pouco mais.

Alguns dados do linux tec:

[    6.310500] [drm] Initialized drm 1.1.0 20060810
[    6.374350] [drm] radeon kernel modesetting enabled.
[    6.387707] [drm] initializing kernel modesetting (TURKS 0x1002:0x6841 0x104D:0x90AB).
[    6.387722] [drm] register mmio base: 0xC0000000
[    6.387724] [drm] register mmio size: 131072
[    6.387859] radeon 0000:01:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
[    6.387862] radeon 0000:01:00.0: GTT: 1024M 0x0000000040000000 - 0x000000007FFFFFFF
[    6.387865] [drm] Detected VRAM RAM=1024M, BAR=256M
[    6.387867] [drm] RAM width 128bits DDR
[    6.388037] [drm] radeon: 1024M of VRAM memory ready
[    6.388039] [drm] radeon: 1024M of GTT memory ready.
[    6.388059] [drm] Loading TURKS Microcode
[    6.388180] [drm] Internal thermal controller without fan control
[    6.390553] [drm] radeon: dpm initialized
[    6.390684] [drm] GART: num cpu pages 262144, num gpu pages 262144
[    6.391647] [drm] PCIE gen 2 link speeds already enabled
[    6.401284] [drm] PCIE GART of 1024M enabled (table at 0x0000000000274000).
[    6.401400] radeon 0000:01:00.0: WB enabled
[    6.401405] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0xffff8800aae58c00
[    6.401408] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0xffff8800aae58c0c
[    6.401913] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x0000000000072118 and cpu addr 0xffffc90002032118
[    6.401918] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    6.401919] [drm] Driver supports precise vblank timestamp query.
[    6.401922] radeon 0000:01:00.0: radeon: MSI limited to 32-bit
[    6.401957] radeon 0000:01:00.0: radeon: using MSI.
[    6.401994] [drm] radeon: irq initialized.
[    6.421516] [drm] ring test on 0 succeeded in 1 usecs
[    6.421526] [drm] ring test on 3 succeeded in 3 usecs
[    6.607648] [drm] ring test on 5 succeeded in 1 usecs
[    6.607654] [drm] UVD initialized successfully.
[    6.607938] [drm] ib test on ring 0 succeeded in 0 usecs
[    6.607967] [drm] ib test on ring 3 succeeded in 0 usecs
[    7.274388] [drm] ib test on ring 5 succeeded
[    7.338243] [drm] radeon atom DIG backlight initialized
[    7.338246] [drm] Radeon Display Connectors
[    7.338247] [drm] Connector 0:
[    7.338248] [drm]   LVDS-1
[    7.338250] [drm]   DDC: 0x6560 0x6560 0x6564 0x6564 0x6568 0x6568 0x656c 0x656c
[    7.338251] [drm]   Encoders:
[    7.338252] [drm]     LCD1: INTERNAL_UNIPHY
[    7.338253] [drm] Connector 1:
[    7.338254] [drm]   HDMI-A-1
[    7.338255] [drm]   HPD1
[    7.338256] [drm]   DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 0x6438 0x643c 0x643c
[    7.338257] [drm]   Encoders:
[    7.338258] [drm]     DFP1: INTERNAL_UNIPHY1
[    7.338259] [drm] Connector 2:
[    7.338260] [drm]   VGA-1
[    7.338261] [drm]   DDC: 0x64d8 0x64d8 0x64dc 0x64dc 0x64e0 0x64e0 0x64e4 0x64e4
[    7.338262] [drm]   Encoders:
[    7.338263] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
[    7.747335] [drm] fb mappable at 0xB0475000
[    7.747338] [drm] vram apper at 0xB0000000
[    7.747339] [drm] size 4325376
[    7.747340] [drm] fb depth is 24
[    7.747341] [drm]    pitch is 5632
[    7.747455] fbcon: radeondrmfb (fb0) is primary device
[    8.341225] radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
[    8.355116] [drm] Initialized radeon 2.43.0 20080528 for 0000:01:00.0 on minor 0


    01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M] [1002:6841]

  *-display
       description: VGA compatible controller
       product: Thames [Radeon HD 7550M/7570M/7650M]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:29 memory:b0000000-bfffffff memory:c0000000-c001ffff ioport:3000(size=256) memory:c0040000-c005ffff

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
    Subsystem: Sony Corporation 2nd Generation Core Processor Family DRAM Controller
    Flags: bus master, fast devsel, latency 0
    Capabilities: <access denied>

00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 24
    Bus: primary=00, secondary=01, subordinate=06, sec-latency=0
    I/O behind bridge: 00003000-00003fff
    Memory behind bridge: c0000000-c0ffffff
    Prefetchable memory behind bridge: 00000000b0000000-00000000bfffffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04) (prog-if 30 [XHCI])
    Subsystem: Sony Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller
    Flags: bus master, medium devsel, latency 0, IRQ 25
    Memory at c1300000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: <access denied>
    Kernel driver in use: xhci_hcd

00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) (prog-if 20 [EHCI])
    Subsystem: Sony Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller
    Flags: bus master, medium devsel, latency 0, IRQ 16
    Memory at c1318000 (32-bit, non-prefetchable) [size=1K]
    Capabilities: <access denied>
    Kernel driver in use: ehci-pci

00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
    Subsystem: Sony Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller
    Flags: bus master, fast devsel, latency 0, IRQ 30
    Memory at c1310000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel

00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 17
    Bus: primary=00, secondary=07, subordinate=07, sec-latency=0
    Memory behind bridge: c1200000-c12fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Bus: primary=00, secondary=08, subordinate=08, sec-latency=0
    Memory behind bridge: c1100000-c11fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 18
    Bus: primary=00, secondary=09, subordinate=09, sec-latency=0
    I/O behind bridge: 00002000-00002fff
    Prefetchable memory behind bridge: 00000000c1000000-00000000c10fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) (prog-if 20 [EHCI])
    Subsystem: Sony Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller
    Flags: bus master, medium devsel, latency 0, IRQ 23
    Memory at c1317000 (32-bit, non-prefetchable) [size=1K]
    Capabilities: <access denied>
    Kernel driver in use: ehci-pci

00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
    Subsystem: Sony Corporation HM76 Express Chipset LPC Controller
    Flags: bus master, medium devsel, latency 0
    Capabilities: <access denied>
    Kernel driver in use: lpc_ich
    Kernel modules: lpc_ich

00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])
    Subsystem: Sony Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode]
    Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 26
    I/O ports at 4048 [size=8]
    I/O ports at 4054 [size=4]
    I/O ports at 4040 [size=8]
    I/O ports at 4050 [size=4]
    I/O ports at 4020 [size=32]
    Memory at c1316000 (32-bit, non-prefetchable) [size=2K]
    Capabilities: <access denied>
    Kernel driver in use: ahci
    Kernel modules: ahci

00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
    Subsystem: Sony Corporation 7 Series/C210 Series Chipset Family SMBus Controller
    Flags: medium devsel, IRQ 10
    Memory at c1314000 (64-bit, non-prefetchable) [size=256]
    I/O ports at 4000 [size=32]
    Kernel modules: i2c_i801

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M] (prog-if 00 [VGA controller])
    Subsystem: Sony Corporation Thames [Radeon HD 7550M/7570M/7650M]
    Flags: bus master, fast devsel, latency 0, IRQ 29
    Memory at b0000000 (64-bit, prefetchable) [size=256M]
    Memory at c0000000 (64-bit, non-prefetchable) [size=128K]
    I/O ports at 3000 [size=256]
    Expansion ROM at c0040000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: radeon
    Kernel modules: radeon

01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Turks/Whistler HDMI Audio [Radeon HD 6000 Series]
    Subsystem: Sony Corporation Turks/Whistler HDMI Audio [Radeon HD 6000 Series]
    Flags: bus master, fast devsel, latency 0, IRQ 31
    Memory at c0020000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel

07:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
    Subsystem: Foxconn International, Inc. Unex DHXA-225
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Memory at c1200000 (64-bit, non-prefetchable) [size=512K]
    Expansion ROM at c1280000 [disabled] [size=64K]
    Capabilities: <access denied>
    Kernel driver in use: ath9k
    Kernel modules: ath9k

08:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01)
    Subsystem: Sony Corporation RTS5209 PCI Express Card Reader
    Flags: bus master, fast devsel, latency 0, IRQ 27
    Memory at c1100000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: <access denied>
    Kernel driver in use: rtsx_pci
    Kernel modules: rtsx_pci

09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)
    Subsystem: Device 90ab:104d
    Flags: bus master, fast devsel, latency 0, IRQ 28
    I/O ports at 2000 [size=256]
    Memory at c1004000 (64-bit, prefetchable) [size=4K]
    Memory at c1000000 (64-bit, prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: r8169
    Kernel modules: r8169

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M] [1002:6841]
    Subsystem: Sony Corporation Thames [Radeon HD 7550M/7570M/7650M] [104d:90ab]
    Kernel driver in use: radeon
    Kernel modules: radeon
    
por integratorIT 12.09.2016 / 21:58

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