Re: Display Resolution-Frequency (Debian vs Windows)
Sanjaya Vitharana wrote: Hi All, Just trying to move my home desktop to Debian from Windows. As initial stage I'm trying with dual boot until I get used to Debian. But the problem is with "gdm" Display Properties. I can't get expected quality for 1024 x 768 resolution as my Windows did. For that resolution I get only 60/87 Hz in Drop Down List. I need Something higher than or equal to 75Hz for 1024 x 768 with clear & cool screen. For 87 Hz with 1024 x 768 which I get after several tries also not satisfied me. It shows some horizontal lines when you see carefully to the screen. Also when scrolling on the browser window can see how letters draged on the screen. Also it is slightly deficult to see on the screen for long time as I feel. No Linux Driver for SiS 315_315E in there site. My Monitor is ViewSonic E50c (Frequency H: 30~54 kHz V: 50~160Hz). I Used "apt-get install xserver-xorg-video-sis" and tried "dpkg-reconfigure xserver-xorg" Since I am new to the Debian I don't no what to do more. Can anyone help. Regards, Sanjaya Vitharana. Your problem is that your max Horizontal Sync Rate is 54kHz, this effectively limits your resolution to 1024x768, in order to achieve [EMAIL PROTECTED] your screen needs to be capable of 80 odd Khz. You may be able to get 1280x1024 with a headache inducing Refresh rate of 50Hz, Modeline "[EMAIL PROTECTED]" 90.89 1280 1312 1656 1688 1024 1045 1054 1076 Have a look at http://www.tkk.fi/Misc/Electronics/faq/vga2rgb/calc.html http://www.x.org/archive/X11R6.8.0/doc/SiS.html What I try to do to resold X issues is at the gdm login prompt press Ctrl + Alt + F2 switch to a different (non X) terminal, log in as root and type /etc/init.d/gdm stop (this will stop gdm and take you to terminal F1 so use Ctrl + Alt + F2 to return to you root session) edit /etc/X11/xorg.conf leave Driver "sis" but comment out the timing lines and let the driver detect them so. Section "Monitor" Identifier "ViewSonic E50c" Option "DPMS" # HorizSync 30-54 # VertRefresh 50-160 EndSection switch back to terminal 1, log in as your everyday user, and startx More and more the drivers will pickup and run with the correct timings otherwise as others have suggested look at /var/log/Xorg.0.log for clues. Good luck. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Display Resolution-Frequency (Debian vs Windows)
On 3/24/08, Sanjaya Vitharana <[EMAIL PROTECTED]> wrote: > Selecting 1024 x 768 75 Hz choosing "Medium" will end up with 1024 x 768 60 > Hz. > > Now Desktop->Preferences->Screen Resolution has only 60 Hz option in > dropdown for 1024 x 768. Blast it. Try installing gvidm, too. Try using the "vesa" driver, instead of the SiS driver. Try [EMAIL PROTECTED] too. Beyond that, I'm sorry, but I don't think that I'll think up anything. Weird problem. Tom -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Display Resolution-Frequency (Debian vs Windows)
> I suspect that your monitor doesn't actually have a horizontal sync of > 30 to 54, it's just wrong on the web site. Why don't you run > dpkg-reconfigure xserver-xorg again, and this time instead of picking > "Advanced" to specify the numbers directly, choose "Medium" and pick > "A monitor that can do 1024x768 at 75 Hz". > > I suppose this advice has the faint possibility that it will cause > your monitor to melt, but I don't think so. > > Hi Tom, Selecting 1024 x 768 75 Hz choosing "Medium" will end up with 1024 x 768 60 Hz. Now Desktop->Preferences->Screen Resolution has only 60 Hz option in dropdown for 1024 x 768. Don't no what to do. Thanks, Sanjaya Vitharana
Re: Display Resolution-Frequency (Debian vs Windows)
On 3/22/08, Sanjaya Vitharana <[EMAIL PROTECTED]> wrote: > > This is not accurate. Your display's vertical refresh is 50-120 Hz, not > > 50-160. > Thanks, I found the correct one as. > http://www.viewsonic.com/support/desktopdisplays/crtmonitors/e2series/e50c/index.htm > I have tried with "dpkg-reconfigure xserver-xorg" using vertical > refresh rate as 50-120 Hz. But results are same as previous. > Find the attached new xorg.conf and logfiles. I suspect that your monitor doesn't actually have a horizontal sync of 30 to 54, it's just wrong on the web site. Why don't you run dpkg-reconfigure xserver-xorg again, and this time instead of picking "Advanced" to specify the numbers directly, choose "Medium" and pick "A monitor that can do 1024x768 at 75 Hz". I suppose this advice has the faint possibility that it will cause your monitor to melt, but I don't think so. Sorry for any confusion, I meant to reply to the list earlier, not just Mr. Vitharana. Tom -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Display Resolution-Frequency (Debian vs Windows)
On 3/21/08, Sanjaya Vitharana <[EMAIL PROTECTED]> wrote: > After reading this mail I tried to start the X using "startx" (instead of > "gdm") & it directly loged me as a root. But same effect, it only shows me > 60/87 Hz for 1024 x 768 and previous problems are there. Yeah, startx is better for testing. > Yes now I am using the second xorg.conf. i.e the one under the hedding > **xorg.conf**current one** in my previous mail. > It has created by "dpkg-reconfigure xserver-xorg" Okay. What we should check next is /var/log/Xorg.0.log . This will show, somewhere inside it, what frequencies it expects from your display. Can you e-mail it to me off-list? Or find a Web site that will let you copy and paste files? Tom -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Display Resolution-Frequency (Debian vs Windows)
On Friday 21 March 2008 07:00:33 am Sanjaya Vitharana wrote: > > You're doing great. > > Thanks > > > Are you sure you restarted X after modifying /etc/X11/xorg.conf? > > No I don't restart the X. Even I didn't know that could be done after > changing xorg.conf without restarting the PC. (X server must be restarted > entirely after reboot) The only thing you need to reboot for are kernel-related (like kernel panics or kernel upgrades). > What I did is, just restarted the mechine using gdm menu & it takes me to > the command line after reboot. ( Because I change the defeult runlevel to 3 > in inittab & rename /etc/rc3.d/S21gdm to /etc/rc3.d/s21gdm) If you don't want GDM to start automatically, rename it to K21gdm (it'll stop gdm automatically switching to that runlevel in the future as well). > Then I logged > as root and execute "gdm" in command prompt. Then I logged to the mechine > using my user account (since it don't give me to log as a root) Log in as root and try /etc/init.d/gdm start. -- Paul Johnson [EMAIL PROTECTED] signature.asc Description: This is a digitally signed message part.
Re: Display Resolution-Frequency (Debian vs Windows)
> > You're doing great. > Thanks > > Are you sure you restarted X after modifying /etc/X11/xorg.conf? > No I don't restart the X. Even I didn't know that could be done after changing xorg.conf without restarting the PC. (X server must be restarted entirely after reboot) What I did is, just restarted the mechine using gdm menu & it takes me to the command line after reboot. ( Because I change the defeult runlevel to 3 in inittab & rename /etc/rc3.d/S21gdm to /etc/rc3.d/s21gdm) Then I logged as root and execute "gdm" in command prompt. Then I logged to the mechine using my user account (since it don't give me to log as a root) After reading this mail I tried to start the X using "startx" (instead of "gdm") & it directly loged me as a root. But same effect, it only shows me 60/87 Hz for 1024 x 768 and previous problems are there. > > /etc/init.d/gdm restart will do it I think. > > I thought that this was worth checking because your attachments show > that you have two > xorg.conf files, and you might not know that you have to restart X > entirely, not just log out > and in again. (I think--I'll have to double-check.) Your first > xorg.conf has low settings that > would give you the poor quality you are talking about, so I wanted to > make sure you were > using the second xorg.conf. > Yes now I am using the second xorg.conf. i.e the one under the hedding **xorg.conf**current one** in my previous mail. It has created by "dpkg-reconfigure xserver-xorg" > > In any case, you're on the right track. > Thanks again. Otherwise I don't no what to do. Regards, Sanjaya Vitharana
Re: Display Resolution-Frequency (Debian vs Windows)
On 3/21/08, Sanjaya Vitharana <[EMAIL PROTECTED]> wrote: > Just trying to move my home desktop to Debian from Windows. As initial stage > I'm trying with dual boot until I get used to Debian. But the problem is > with "gdm" Display Properties. I can't get expected quality for 1024 x 768 > resolution as my Windows did. For that resolution I get only 60/87 Hz in > Drop Down List. I need Something higher than or equal to 75Hz for 1024 x 768 > with clear & cool screen. > > For 87 Hz with 1024 x 768 which I get after several tries also not satisfied > me. It shows some horizontal lines when you see carefully to the screen. It's interlaced, which means that it only shows every other line per cycle. This explains the lines you see when you look carefully, and also the low quality. > Also when scrolling on the browser window can see how letters draged on the > screen. Also it is slightly deficult to see on the screen for long time as I > feel. Yeah, that's interlace for you. > No Linux Driver for SiS 315_315E in there site. My Monitor is ViewSonic E50c > (Frequency H: 30~54 kHz V: 50~160Hz). I Used "apt-get install > xserver-xorg-video-sis" and tried "dpkg-reconfigure xserver-xorg" > > Since I am new to the Debian I don't no what to do more. Can anyone help. You're doing great. Are you sure you restarted X after modifying /etc/X11/xorg.conf? /etc/init.d/gdm restart will do it I think. I thought that this was worth checking because your attachments show that you have two xorg.conf files, and you might not know that you have to restart X entirely, not just log out and in again. (I think--I'll have to double-check.) Your first xorg.conf has low settings that would give you the poor quality you are talking about, so I wanted to make sure you were using the second xorg.conf. In any case, you're on the right track. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
