[ubuntu-it] Problema di sfarfallamento immagine nel proiettore e/o freq. di refresh

[Andrea Picco]

Ciao a tutti,
devo collegare il notebook ad un proiettore per fare una presentazione ma
l'immagine del proiettore sfarfalla tantissimo.

Penso sia un problema di frequenza di refresh, ma l'unico valore che posso
selezionare da Sistema>Preferenze>Risoluzione dello Schermo e` 60 Hz. Ho
guardato nel file xorg.conf ma non trovo dove poter settare nuovi valori di
refresh.

Ho un acer con ati radeon x600. I driver sono quelli generici "ati" di
ubuntu. Penso che installando i driver proprietari il problema si possa
risolvere ma vorrei evitare.

Grazie mille anticipatamente. qui di seguito il mio xorg.conf:

Section "Files"
    FontPath    "/usr/share/X11/fonts/misc"
    FontPath    "/usr/share/X11/fonts/cyrillic"
    FontPath    "/usr/share/X11/fonts/100dpi/:unscaled"
    FontPath    "/usr/share/X11/fonts/75dpi/:unscaled"
    FontPath    "/usr/share/X11/fonts/Type1"
    FontPath    "/usr/share/X11/fonts/CID"
    FontPath    "/usr/share/X11/fonts/100dpi"
    FontPath    "/usr/share/X11/fonts/75dpi"
        # paths to defoma fonts
    FontPath    "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
    FontPath    "/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"
EndSection

Section "Module"
    Load    "GLcore"
    Load    "i2c"
    Load    "bitmap"
    Load    "ddc"
    Load    "dri"
    Load    "extmod"
    Load    "freetype"
    Load    "glx"
    Load    "int10"
    Load    "type1"
    Load    "vbe"
EndSection

Section "InputDevice"
    Identifier    "Generic Keyboard"
    Driver        "kbd"
    Option        "CoreKeyboard"
    Option        "XkbRules"    "xorg"
    Option        "XkbModel"    "pc105"
    Option        "XkbLayout"    "it"
EndSection

Section "InputDevice"
    Identifier    "Configured Mouse"
    Driver        "mouse"
    Option        "CorePointer"
    Option        "Device"        "/dev/input/mice"
    Option        "Protocol"        "ImPS/2"
    Option        "Emulate3Buttons"    "true"
    Option        "ZAxisMapping"        "4 5"
EndSection

Section "InputDevice"
    Identifier    "Synaptics Touchpad"
    Driver        "synaptics"
    Option        "SendCoreEvents"    "true"
    Option        "Device"        "/dev/psaux"
    Option        "Protocol"        "auto-dev"
    Option        "HorizScrollDelta"    "0"
EndSection

Section "Device"
    Identifier    "ATI Technologies, Inc. Radeon Mobility X600 (M24)"
    Driver        "ati"
    BusID        "PCI:1:0:0"
    Option        "MonitorLayout" "LVDS,Auto"
EndSection

Section "Monitor"
    Identifier    "Monitor Generico"
    Option        "DPMS"
    Modeline    "1280x800 a 60" 83.91 1280 1312 1624 1656 800 816 824 841
EndSection

Section "Screen"
    Identifier    "Default Screen"
    Device        "ATI Technologies, Inc. Radeon Mobility X600 (M24)"
    Monitor        "Monitor Generico"
    DefaultDepth    24
    SubSection "Display"
        Depth        1
        Modes        "1280x800"
    EndSubSection
    SubSection "Display"
        Depth        4
        Modes        "1280x800"
    EndSubSection
    SubSection "Display"
        Depth        8
        Modes        "1280x800"
    EndSubSection
    SubSection "Display"
        Depth        15
        Modes        "1280x800"
    EndSubSection
    SubSection "Display"
        Depth        16
        Modes        "1280x800"
    EndSubSection
    SubSection "Display"
        Depth        24
        Modes        "1280x800"
    EndSubSection
EndSection

Section "ServerLayout"
    Identifier    "Default Layout"
    Screen        "Default Screen"
    InputDevice    "Generic Keyboard"
    InputDevice    "Configured Mouse"
    InputDevice    "Synaptics Touchpad"
EndSection

Section "DRI"
    Mode    0666
EndSection


-- 
Andrea Picco, PhD Student
Department of Theoretical Physics,
University of Turin.
Department of Oncological Sciences,
Institute for Cancer Research and Treatment - IRCC
Str Prov 142, Km 3.95
10060 Candiolo (Torino)
Italy

Phone: +390119933505
Fax: +390119933524
Web: www.ph.unito.it/~picco/
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