Decorazioni delle finestre con effetti desktop persi

Riconfiguriamo il xserver generando un nuovo file di configurazione, così se avete attivi "gli effetti desktop" potreste saltare queste linee.

Se le decorazioni delle finestre non compaiono e/o le finestre trasparenti si vedono solide, queste due linee devono essere aggiunte alla Section "Screen":

        Option          "AddARGBVisuals" "true"
        Option          "AddARGBGLXVisuals" "true"

Driver grafici Intel (i810) non userà le alte risoluzioni

Questo è un fatto comune in questa versione con Intel graphics nella risoluzione dello schermo non viene inizialmente abilitato, spesso anche dopo la loro aggiunta al file xorg.conf. Ciò accade con i driver video i810, ma i più nuovi driver Intel non hanno questi problemi.

Installare i driver video Intel più recenti

Purtroppo i nuovi driver sono disponibili solo per la versione 6.10 o superiori (Edgy, Feisty etc), e non per la versione 6.06.1 (Dapper). Se avete la versione Edgy o superiori allora potete installare l'ultima versione dei driver video Intel con:-

{{{sudo apt-get install xserver-xorg-video-intel }}}

Altrimenti modificare il file /etc/X11/xorg.conf e cambiare questo:

{{{Driver "i810" }}}

in questo:

{{{Driver "intel" }}}

Potete modificare il file xorg.conf da terminale usando il comando:

{{{sudo nano /etc/X11/xorg.conf }}}

Alternativamente da GUI usando:

{{{ALT+F2 gksudo gedit /etc/X11/xorg.conf }}} O da Kubuntu: {{ALT+F2 kdesu kate /etc/X11/xorg.conf }}}

Con i più vecchi driver i810 usate 915resolution

Questo problema appare avvolte nei computer portatili con "non-standard"-risoluzione schermo in combinazione sicura con Intel graphic-chips. Sfondo: Sembra che i Video Bios (vBios) abbiano sviluppato la risoluzione ottimale per uno schermo-lcd per permettere all'auto configurazione di poter impostare questa risoluzione. Per quanto a volte la risoluzione ottimale non è rilasciata e di conseguenza la risoluzione ottimale non può essere realizzata.

I migliori risultati sono forniti dal software "915resolution". Guarda ["i915Driver"]

E' possibile riparare al problema sovrascrivendo le impostazioni del vBios nella RAM usando un programma chaimato 915resolution. Usa 915resolution per fare cambi non permanenti al computer -- i suoi effetti sono cancellati al riavvio.

Qui c'è la descrizione dello sviluppatore di 915resolution: "915resolution è uno strumento che modifica il video BIOS della serie 800 e 900 dei chipsets graphics Intel"

Per installare 915resolution su Ubuntu bisogna essere sicuri di aver incluso il repository "universe" e tipo (sostituire "915resolution" con "855resolution" su Breezy):

sudo apt-get install 915resolution

Una volta che il programma è installato è possibile usare il programma per elencare tutti i modi disponibili di vBios:

sudo 915resolution -l

Il risultato srà simile a questo:

Intel 800/900 Series VBIOS Hack : version 0.5.2

Chipset: 845G
BIOS: TYPE 1
Mode Table Offset: $C0000 + $269
Mode Table Entries: 27

Mode 30 : 640x480, 8 bits/pixel
Mode 32 : 800x600, 8 bits/pixel
Mode 34 : 1024x768, 8 bits/pixel
Mode 38 : 1280x1024, 8 bits/pixel
Mode 3a : 1600x1200, 8 bits/pixel
Mode 3c : 1920x1440, 8 bits/pixel
Mode 41 : 640x480, 16 bits/pixel
Mode 43 : 800x600, 16 bits/pixel
Mode 45 : 1024x768, 16 bits/pixel
Mode 49 : 1280x1024, 16 bits/pixel
Mode 4b : 1600x1200, 16 bits/pixel
Mode 4d : 1920x1440, 16 bits/pixel
Mode 50 : 640x480, 32 bits/pixel
Mode 52 : 800x600, 32 bits/pixel
Mode 54 : 1024x768, 32 bits/pixel
Mode 58 : 1280x1024, 32 bits/pixel
Mode 5a : 1600x1200, 32 bits/pixel
Mode 5c : 1920x1440, 32 bits/pixel

Se la risoluzione del tuo schermo non è presente allora puoi sovrascrivere una modalità non usata dal vostro schermo. I risultati usando 915resolution sono temporanei dovete arrange per farlo funzionare ogni volta dal caricamento del sistema in poi su Ubuntu. Ciò avviene modificando il file /etc/default/915resolution. Per esemio se volete sovrascrivere il modo 41 dalla risoluzione 2400x1600:

sudo nano /etc/default/915resolution

Il file dovrebbe assomigliare a questo:

#
# 915resolution default
#
# find free modes by  /usr/sbin/915resolution -l
# and set it to MODE  or set to 'MODE=auto'
#
MODE=41
#
# and set resolutions for the mode.
XRESO=2400
YRESO=1600

Questo farà in modo che il modo 41 del vBios venga sovrascritto nella RAM riavvio, priam dell'inizializzazione di X-windows. Poiché la risoluzione sia disponibile nel vBios il tuo sistema dovrebbe automaticamente capace di impostare la giusta risoluzione dopo il riavvio.

Incorrect DefaultDepth

A volte la configurazione automatica di X imposta i colori depth ad un valore elevato che some hardware can properly handle. Per vedere se questo è il vostro caso, prima fare il backup del file /etc/X11/xorg.conf :

sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.backup

Ora aprite il file con l'editor di testo preferito. Amettendo che voi usiate nano per ora poiché è relativamente semplice da usarlo, ma potete usare qualunque editor di testo che volete.

sudo nano /etc/X11/xorg.conf

E cercare DefaultDepth (notice it is one word) in questo file. Di default la colour depth è impostata tipicamente a "24" da Hoary, ma come accennato, alcuni hardware non possono applicare un valore elevato. È abbastanza sicuro cambiarlo in qualcosa tipo "16" giusto per provare se risolve o no i problemi video. Se questo cambia non hai risolte qualcosa, è giusto ripristinarlo come era prima poiché è semplice.

Once the value of DefaultDepth is changed, save the file, close all open windows on your desktop, and press CTRL-ALT-Backspace to restart X. Assuming all goes well, you will be prompted to log into GNOME again, hopefully at a higher resolution.

ATI - Refresh Rate & Resolution QuickFix

For those of you who run an ATI card with the fglrx driver, try running (in a Terminal):

sudo aticonfig

Follow the on-screen Instructions. This should fix the issue after restarting GDM. For Instance on a Setup with:

• 1 CRT Monitor
• No TV-Out

I would be running these commands:

sudo  aticonfig --initial --input=/etc/X11/xorg.conf
sudo  aticonfig --resolution=1600x1200,1280x1024,1024x768
sudo  aticonfig --force-monitor=crt1,notv

After you ran your aticonfig commands, you need to restart GDM, to restart GDM use the following command:

/etc/init.d/gdm restart

That should fix it for good! If you experience a different Resolution being used for GDM than your Desktop, you can scroll to the bottom of this Page to: "GDM uses a different Resolution than my Desktop" to fix the issue.

GDM looks right, but Gnome looks wrong

This problem occured on a vanilla installation of 5.10 that -- somewhat unnaturally -- was running under VirtualPC. Because this was not a normal device, I set the device to VESA and the resolution to 1024x768 in the configuration manager by:

sudo dpkg-reconfigure xserver-xorg

Naturally, make sure you configure these settings properly for your hardware.

These settings allowed GDM to present a normal login screen. However, completing login caused the display to fail.

Fix this by running the gconf-editor tool as a normal user and altering the screen settings within Gnome's XML configuration registry to equal the /etc/X11/xorg.conf settings:

startx gconf-editor

Browse the editor to /desktop/gnome/screen/default/%d where %d will probably be 0. Select this node and change the resolution to your resolution of choice, and make sure rate is something functional for your display device as well.

Exit the editor, and try logging in through GDM again.

GDM uses a different Resolution than my Desktop

This problem is easily solvable; to fix it do the following:

1) Make a Backup of your xorg.conf

sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf.bak

2) Open xorg.conf

sudo nano /etc/X11/xorg.conf

3) Locate your Screen Entry

Section "Screen"

You will find multiple entries similar to:

        SubSection "Display"
                Depth     24
                Modes    "1280x1024" "1024x768"
        EndSubSection

The First Entry in the "Modes" Line is what GDM will use, so change it to something lower/higher (Please make sure you know that your monitor and Graphic Card BOTH support this Resolution). Save the file.

Close all running applications, restart GDM (/etc/init.d/gdm restart). Another way is just to log out your ubuntu session and press Ctrl-Alt-Backspace in the login screen. Look if everything went fine.

If the specified display resolution - "1280x1024" in the case above - differs from the used virtual screen resolution, add a respective line in the Display subsection of xorg.conf:

Virtual 1280 1024 

If these changes did not help, you can always use:

sudo cp /etc/X11/xorg.conf.bak /etc/X11/xorg.conf

to restore your system to the previous state.

You use the "nvidia" driver (Binary drivers)

It would seem that xorg cannot detect the possible resolutions when using the "nvidia" driver. For me, the only resolution I could use was my LCD's native resolution (1680x1050).

Here's how you fix this:

1) Make a backup of your /etc/X11/xorg.conf as shown in the previous examples

2) Open /etc/X11/xorg.conf as shown in the previous examples

3) Add the following line to your existing "Screen" section:

Option "UseEdidFreqs" "false"

If all else fails, try running the following command:

sudo nvidia-settings

Under Video Configuration set your resolution and refresh rate, click apply, then save X Config.

Well, it worked for me: Feisty, Intel i810 video & Widescreen LCD

Added by TonyS, 12 May 07

I impulsively bought a ViewSonic VG1930WM 19" widescreen LCD (at a distinctly newfangled 1440x900 native resolution) without considering the possible pain in making the low powered Intel i810 (82845G/GL) graphics in my old Compaq EVO desktop (and Feisty) talk to it...

It really was a hassle, but I've solved it and thought someone, somewhere, sometime might benefit from knowing how.

Just a wee note first that the "915resolution" solution described in the wiki above did NOT work. After fiddling for ages I got the mode installed and the GUI would come up OK, but the display was corrupt, with the left edge missing in action off the edge of the window, the top inch or so blank and the right hand side two inches peculiarly munted. Hopeless.

OK, here's what solved it for me...

If (like me) you've already broken X at this point and are staring at a blank screen you need to reboot (I had to use the power button hold-for-5-seconds trick), hit "escape" at the first mention of Grub on reboot, and choose to boot in Safe Mode. This boots to a command prompt. Scary for many for sure, but its not TOO painful from here, so stay brave.

First, install the newer Intel drivers. I'm not sure why these aren't installed by default, sure should be. I think you'll need Universe enabled:-

sudo apt-get install xserver-xorg-video-intel

It asks if you want to replace the old drivers. Yep, you sure do.

Then run the xserver video autodetect thingy:-

sudo dpkg-reconfigure xserver-xorg

Choose all the autodetected and default settings it offers, with these exceptions:

1. At one point it asks about allocating system memory to the video card, making specific mention of the the i810. I'm not sure if it made any difference, but I set this to 64000 KB.

2. When it lists the resolutions you want enabled MAKE SURE your monitors native solution (in my case 1440 x 900) is checked.

Now you must reboot. You can do this by typing (wait for it...) "reboot". Nice.

This time let it boot as normal. With any luck it'll pop back up beautifully. In my case it came up 1024x768, so I went to System | Preferences | Screen Resolution and chose 1440x900, which worked perfectly.

GDM 1440x900 @ 75Hz on Viewsonic VG1930WM and Intel 946GZ

Added by VivekKapoor, 10 November 2007

Update: The following method worked, but when I logged out, I couldn't see the gdm screen. I had to switch to Virtual Terminal by pressing CTRL+ALT+1 and then restart the machine. But YMMV. I got a nVidia GeForce 7300 GT to solve the problem and it works smooth!

I bought a new VG1930WM monitor and spent a few days getting 1440x900 in GDM. I was successfully able to get 1440x900 @ 75Hz in my desktop as I was able to change it via the "System -> Preferences -> Screen Resolution". However in GDM it was using 60Hz. Due to this there was around 150-200 pixel blank space on the left of the screen. The motherboard is Asus P5B-MX WIFI-AP and the graphics chipset is Intel 946GZ. The Operating System is Ubuntu Gutsy Gibbon 7.10.

The solution was to use 915resolution and i810 driver instead of the stock intel driver and 16 bit resolution. Here's what I did.

1. Got the hsync and vsync from

   • sudo ddcprobe | grep monitorrange

2. Got the Modeline for xorg.conf from

   • root@Marqus:~# gtf 1440 900 75
     
       # 1440x900 @ 75.00 Hz (GTF) hsync: 70.50 kHz; pclk: 136.49 MHz
       Modeline "1440x900_75.00"  136.49  1440 1536 1688 1936  900 901 904 940  -HSync +Vsync
     
     root@Marqus:~# 

3. Added it in xorg.conf. The relevant sections from xorg.conf are

   • Section "Module"
     Load "i2c"
     Load "bitmap"
     #Load "ddc"
     Load "dri"
     Load "extmod"
     Load "freetype"
     Load "glx"
     Load "int10"
     Load "vbe"
     EndSection
     
     
     Section "Device"
             Identifier      "Intel Corporation 82946GZ/GL Integrated Graphics Controller"
             Driver          "i810"
             BusID           "PCI:0:2:0"
     EndSection
     
     
     Section "Monitor"
             Identifier      "VG1930wm"
             Option          "DPMS"
             HorizSync       30-82
             VertRefresh     50-75
             # 1440x900 @ 75.00 Hz (GTF) hsync: 70.50 kHz; pclk: 136.49 MHz
             Modeline "1440x900_75.00"  136.49  1440 1536 1688 1936  900 901 904 940  -HSync +Vsync
     EndSection
     
     
     Section "Screen"
             Identifier      "Default Screen"
             Device          "Intel Corporation 82946GZ/GL Integrated Graphics Controller"
             Monitor         "VG1930wm"
             DefaultDepth    16
             SubSection "Display"
                     Depth   16
                     Modes   "1440x900_75.00"
             EndSubSection
     EndSection

4. Installed 915resolution through

   • apt-get install 915resolution

5. Configured 915resolution

   1. Listed the available resolution on the screen

      • 915resolution -l

   2. Chose the mode 5c

   3. Edited /etc/default/915resolution and put the following entries

      • #
        # 915resolution default
        #
        # find free modes by  /usr/sbin/915resolution -l
        # and set it to MODE or set to 'MODE=auto'
        #
        # With 'auto' detection, the panel-size will be fetched from the VBE
        # BIOS if possible and the highest-numbered mode in each bit-depth
        # will be overwritten with the detected panel-size.
        MODE=5c
        #
        # and set resolutions for the mode.
        # e.g. use XRESO=1024 and YRESO=768
        XRESO=1440
        YRESO=900
        #
        # We can also set the pixel mode.
        # e.g. use BIT=32
        # Please note that this is optional,
        # you can also leave this value blank.
        BIT=16

   4. Edited /etc/init.d/915resolution and put two extra variables VALHSYNC and VALVSYNC and added them as parameters while starting 915resolution

      • PATH=/sbin:/bin:/usr/sbin:/usr/bin
        PROG=/usr/sbin/915resolution
        NAME=915resolution
        DESC=915resolution
        VBETOOL=/usr/sbin/vbetool
        VALHSYNC=30-82
        VALVSYNC=50-75

        From /etc/init.d/915resolution (Modified Line 7 below and added $VALHSYNC and $VALVSYNC

        case "$1" in
          start|restart|force-reload)
                echo -n "Starting $DESC: "
                if [ "$MODE" = "auto" ] ; then
                    auto_select_modes
                else
                    $PROG $MODE $XRESO $YRESO $BIT $VALHSYNC $VALVSYNC
                fi
                echo "$NAME."
                ;;
          stop)

6. That's all, I restarted the machine and it worked!

Adjust Only Resolution Settings on Dell Laptop

1. All I needed to do was get my laptop to display a higher resolution than 800x600. When I went to Syestem -> Preferences -> Screen Resolution, it was only showing me 800x600.

2. MAKE a backup of your /etc/X11/xorg.conf.

3. Open up terminal and type: sudo dpkg-reconfigure -phigh xserver-xorg.

4. I left mine on vesa (since I knew that driver was working) and select "ok".

5. This is the fun part, go through and select the screen resolutions you want enabled by default. Whatever you check here should end up in the dropdown list in Syestem -> Preferences -> Screen Resolution,

6. Restart X server (CNTRL+Alt+Backspace).

7. It started up in the highest resolution that I had selected (1440x900). No need (for me) to install nvidia drivers.

The End

So far, this is all of the possible solutions I've collected for this problem. If none of the above corrected your situation, consider posting your question in the [http://www.ubuntuforums.org Ubuntu Support Forum] or in the #ubuntu IRC support channel on the irc.freenode.net network.

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