Re: Display hurtful on LCD screen with Wheezy

2012-10-14 Thread Andrei POPESCU
On Jo, 20 sep 12, 17:23:50, lee wrote: Andrei POPESCU andreimpope...@gmail.com writes: I have however seen LCD monitors behave significantly different depending on refresh rate. Entire areas were blury, but everything was fine when I switched to another refresh rate (60Hz - 75Hz if I

Re: Display hurtful on LCD screen with Wheezy

2012-10-04 Thread Lionel Trésaugues
I have used the standard settings from the screen grab, then I saved them them using shutter as png (so, I don't really know if the magnifier has compressed them before hand). Another thing is that I have currently wiped of the Debian partition that caused me the troubles reported in this

Re: Display hurtful on LCD screen with Wheezy

2012-10-03 Thread Joel Rees
On 10/2/12, Mark Allums m...@allums.com wrote: On 9/30/2012 7:32 PM, Joel Rees wrote: (Mark, did you set the screen grab to give you raw images or compressed?) 'Twasn't me. I had a minor disagreement with another user over the topic of refresh while trying to make a suggestion, but it

Re: Display hurtful on LCD screen with Wheezy

2012-10-01 Thread Mark Allums
On 9/30/2012 7:32 PM, Joel Rees wrote: (Mark, did you set the screen grab to give you raw images or compressed?) 'Twasn't me. I had a minor disagreement with another user over the topic of refresh while trying to make a suggestion, but it wasn't my problem. I wasn't the OP. Mark --

Re: Display hurtful on LCD screen with Wheezy

2012-09-30 Thread Joel Rees
Top posting because I don't want anyone to feel attacked. We are all users here. Hmm. Look, even the engineers have to operate from incomplete models. No one in this world knows everything. And that's true of the tech we use, including computers. Shoot, even back in the days when some of us

Re: Display hurtful on LCD screen with Wheezy

2012-09-27 Thread lee
Lionel Trésaugues lionel.tresaug...@gmail.com writes: http://i1058.photobucket.com/albums/t405/Alkalyzer/Ubuntu_Terminal_zps83103ab7.png http://i1058.photobucket.com/albums/t405/Alkalyzer/Debian_Terminal_zps1867e859.png Now I see what you mean, things look better in Ubuntu. There doesn't seem

Re: Display hurtful on LCD screen with Wheezy

2012-09-27 Thread Neal Murphy
On Thursday, September 27, 2012 02:53:19 AM lee wrote: Lionel Trésaugues lionel.tresaug...@gmail.com writes: http://i1058.photobucket.com/albums/t405/Alkalyzer/Ubuntu_Terminal_zps831 03ab7.png http://i1058.photobucket.com/albums/t405/Alkalyzer/Debian_Terminal_zps18 67e859.png Now I see

Re: Display hurtful on LCD screen with Wheezy

2012-09-26 Thread Eduardo M KALINOWSKI
On 09/26/2012 11:12 AM, Lionel Trésaugues wrote: All right. Some users have asked me to upload some screenshots. So, here they are ! The ones I obtained using Ubuntu got Ubuntu in their filenames and the ones from Debian, Debian in their filenames. I tried to take screenshots as similar as

Re: Display hurtful on LCD screen with Wheezy

2012-09-23 Thread lee
Andrei POPESCU andreimpope...@gmail.com writes: I have however seen LCD monitors behave significantly different depending on refresh rate. Entire areas were blury, but everything was fine when I switched to another refresh rate (60Hz - 75Hz if I remember correctly). How did you do that?

Re: Display hurtful on LCD screen with Wheezy

2012-09-21 Thread Ralf Mardorf
On Thu, 2012-09-20 at 16:37 -0400, Neal Murphy wrote: Come now. It just isn't a proper internet discussion without a flamewar thrown in. :) :D But an OT t the subject for the flame would be nice. - if a CRT, can you (or anyone with very good ears) hear a very high pitched whine, nearly in

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread lee
Lionel Trésaugues lionel.tresaug...@gmail.com writes: First, thanks all of you to try to solve the issue I encounter with Debian. I will come back now to some of the points you mentioned in the discussion. How important is it to you to be able to run Debian? Would it be worth some

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Andrei POPESCU
On Ma, 18 sep 12, 23:31:21, Lionel Trésaugues wrote: Hello, I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition). Switching from XFCE to MATE doesn't lead to any

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Mark Allums
On 9/19/ LCDs do not flicker. I *explicitly* did not say flicker. I do not mean flicker. Flicker is perceptible to the viewer. Minitors *do* refresh. They do not all refresh at the same rate. The OP is complaining of eye-strain and headaches. These are real, and quite reasonably he

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Mark Allums
On 9/19/2012 6:49 PM, Ralf Mardorf wrote: On Thu, 2012-09-20 at 00:03 +0100, Lisi wrote: On Wednesday 19 September 2012 23:38:48 Mark Allums wrote: On 9/19/2012 5:33 PM, Lisi wrote: On Wednesday 19 September 2012 22:40:30 Lionel Trésaugues wrote: Yes. Me neither. The only parameter I

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Lisi
On Thursday 20 September 2012 13:18:58 Mark Allums wrote: On 9/19/ LCDs do not flicker. I *explicitly* did not say flicker. I do not mean flicker. Flicker is perceptible to the viewer. Minitors *do* refresh. They do not all refresh at the same rate. The OP is complaining of

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Andrei POPESCU
On Jo, 20 sep 12, 07:18:58, Mark Allums wrote: LCD do not refresh in the same sense as CRTs. They project a continuous picture. If a pixel doesn't change, it stays lit. No fading. OPs problem is not due to refresh, unless it is a CRT. His problem is probably due to environmental

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Mark Allums
On 9/20/2012 8:59 AM, Andrei POPESCU wrote: On Jo, 20 sep 12, 07:18:58, Mark Allums wrote: LCD do not refresh in the same sense as CRTs. They project a continuous picture. If a pixel doesn't change, it stays lit. No fading. OPs problem is not due to refresh, unless it is a CRT. His problem

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Camaleón
On Wed, 19 Sep 2012 23:40:30 +0200, Lionel Trésaugues wrote: First, thanks all of you to try to solve the issue I encounter with Debian. I will come back now to some of the points you mentioned in the discussion. (for the next time consider individual replies instead putting all the bunch

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Lisi
On Thursday 20 September 2012 15:37:54 Mark Allums wrote: Never had that experience or heard of it or dreamt of it. You obviously feel that your experience is more valid than anyone else's when it comes to monitors. But you appear to know nothing at all about eye/eyesight/eyestrain problems

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Lisi
On Tuesday 18 September 2012 22:31:21 Lionel Trésaugues wrote: I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition). Switching from XFCE to MATE doesn't lead to any

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Andrei POPESCU
On Jo, 20 sep 12, 09:37:54, Mark Allums wrote: I have however seen LCD monitors behave significantly different depending on refresh rate. Entire areas were blury, but everything was fine when I switched to another refresh rate (60Hz - 75Hz if I remember correctly). I have never owned an

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Joey Hess
Lionel Trésaugues wrote: Debian and Ubuntu deal with fonts existed. But the unpleasant feeling is present (even if not so intense), just by looking at the background of an empty desktop. It seems that the light is too intense, too violent (even when I reduce the brightness) and that my eyes

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread T Elcor
- Original Message from Lionel Trésaugues - Lowering the brightness helps a little bit to make the pain more bearable, but it is still unpleasant and hurtful after a while. Another thing you may want to try is to connect your monitor through the VGA connector instead of DVI, if you

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Mark Allums
On 9/20/2012 9:51 AM, Lisi wrote: On Thursday 20 September 2012 15:37:54 Mark Allums wrote: Never had that experience or heard of it or dreamt of it. You obviously feel that your experience is more valid than anyone else's when it comes to monitors. But you appear to know nothing at all

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Mark Allums
On 9/20/2012 10:16 AM, Andrei POPESCU wrote: On Jo, 20 sep 12, 09:37:54, Mark Allums wrote: I have however seen LCD monitors behave significantly different depending on refresh rate. Entire areas were blury, but everything was fine when I switched to another refresh rate (60Hz - 75Hz if I

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Henrique de Moraes Holschuh
On Thu, 20 Sep 2012, Mark Allums wrote: Very few LCD monitors have a refresh setting other than 60Hz. So few, in fact, that I have never seen one of them. I am sure that it Usually the native resolution is at 60Hz, but not always. And if you are running at a lower resolution than native,

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Henrique de Moraes Holschuh
On Thu, 20 Sep 2012, Lisi wrote: On Tuesday 18 September 2012 22:31:21 Lionel Trésaugues wrote: I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition). Switching from XFCE

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Lisi
On Thursday 20 September 2012 18:20:49 Mark Allums wrote: On Thursday 20 September 2012 15:37:54 Mark Allums wrote: Never had that experience or heard of it or dreamt of it. You obviously feel that your experience is more valid than anyone else's when it comes to monitors.  But you

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Mark Allums
On 9/20/2012 2:36 PM, Lisi wrote: On Thursday 20 September 2012 18:20:49 Mark Allums wrote: On Thursday 20 September 2012 15:37:54 Mark Allums wrote: Never had that experience or heard of it or dreamt of it. You obviously feel that your experience is more valid than anyone else's when it

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Lionel Trésaugues
Another thing you may want to try is to connect your monitor through the VGA connector instead of DVI, if you have the right cable. Not sure if that would help, just curious if that would make any difference. My computer is connected to the Samsung SyncMaster through a VGA connector.

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Lionel Trésaugues
LCDs work by blocking the white light from the backlight. If the pannel is leaking UV, the leak should be worse on bright images (probably those with brighter red and blue channel values). But it really should not be leaking any relevant amount of UV in the first place. Very interesting. But it

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Neal Murphy
On Thursday, September 20, 2012 03:55:48 PM Lionel Trésaugues wrote: And the sub-pixel order is equal too? The sub-pixel order is set to rgb (like I do in Ubuntu). I can definitely see a (worse) change if I use a different mode. Disabling the sub-pixel smoothing didn't improve anything

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Lisi
On Thursday 20 September 2012 20:50:40 Mark Allums wrote: You were obsessed with the refresh rate. This is absurd. I mentioned it twice, amid a lot of other things. It is you who are obsessed. If you want to continue this absurd attack on me, may I suggest that you go off list. Lisi --

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Mark Allums
On 9/20/2012 3:37 PM, Lisi wrote: On Thursday 20 September 2012 20:50:40 Mark Allums wrote: You were obsessed with the refresh rate. This is absurd. I mentioned it twice, amid a lot of other things. It is you who are obsessed. If you want to continue this absurd attack on me, may I suggest

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Ralf Mardorf
On Thu, 2012-09-20 at 16:01 +0100, Lisi wrote: On Tuesday 18 September 2012 22:31:21 Lionel Trésaugues wrote: I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition).

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Ralf Mardorf
On Thu, 2012-09-20 at 11:30 -0400, Joey Hess wrote: Inaudible or barely audible noise from either the computer or the monitor, possibly created by specific clocks cycles of a particular software load. (TV sets do this to me all the time.) Try turning the monitor off and staying in front

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Ralf Mardorf
On Thu, 2012-09-20 at 08:42 -0700, T Elcor wrote: - Original Message from Lionel Trésaugues - Lowering the brightness helps a little bit to make the pain more bearable, but it is still unpleasant and hurtful after a while. Another thing you may want to try is to connect your

Re: Display hurtful on LCD screen with Wheezy

2012-09-20 Thread Ralf Mardorf
I don't remember, you still have Ubuntu installed too? If not, it might be possible that the LCD display gets broken in the meantime, so even degassing of broken semiconductor could be possible or emission of ozone and of course the picture could be less good too. -- To UNSUBSCRIBE, email to

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Ralf Mardorf
On Tue, 2012-09-18 at 20:01 -0400, Rob Owens wrote: On Tue, Sep 18, 2012 at 11:13:40PM +0100, Martin Smith wrote: A minimum refresh rate of 72Hz is recommended (same as average human heart rate) to minimize optical discomfort that you seem to be suffering. Less than that the screen will

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread T Elcor
- Original Message - From: Lionel Trésaugues lionel.tresaug...@gmail.com I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition). Switching from XFCE to MATE doesn't

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Ralf Mardorf
On Wed, 2012-09-19 at 06:47 -0700, T Elcor wrote: For CRT monitors, anything below 75Hz refresh rate results in visible flickering It becomes usable at 75Hz, it becomes comfortable at = 80Hz. If you move your head or the monitor is in the corner of the eye, 75Hz still could noticeable flicker.

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Camaleón
On Tue, 18 Sep 2012 23:31:21 +0200, Lionel Trésaugues wrote: I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition). Switching from XFCE to MATE doesn't lead to any

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Lionel Trésaugues
First, thanks all of you to try to solve the issue I encounter with Debian. I will come back now to some of the points you mentioned in the discussion. How important is it to you to be able to run Debian? Would it be worth some spectacles, or some new ones if you already wear them? (This

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Ralf Mardorf
On Wed, 2012-09-19 at 23:40 +0200, Lionel Trésaugues wrote: The fonts (with the same hinting and antialiasing settings) And the sub-pixel order is equal too? -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Shane Johnson
Just a wild stab in the Dark here, could it be interlaced? Shane On Wed, Sep 19, 2012 at 4:14 PM, Ralf Mardorf ralf.mard...@alice-dsl.netwrote: On Wed, 2012-09-19 at 23:40 +0200, Lionel Trésaugues wrote: The fonts (with the same hinting and antialiasing settings) And the sub-pixel order is

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Lisi
On Wednesday 19 September 2012 22:40:30 Lionel Trésaugues wrote: Yes. Me neither. The only parameter I couldn't check (due to my lack of knowledge) is the horizontal refresh rate. Any idea how I can get this value ? I still feel that a very minor difference in the refresh rates might be at the

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Mark Allums
On 9/19/2012 5:33 PM, Lisi wrote: On Wednesday 19 September 2012 22:40:30 Lionel Trésaugues wrote: Yes. Me neither. The only parameter I couldn't check (due to my lack of knowledge) is the horizontal refresh rate. Any idea how I can get this value ? I still feel that a very minor difference

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Lisi
On Wednesday 19 September 2012 23:38:48 Mark Allums wrote: On 9/19/2012 5:33 PM, Lisi wrote: On Wednesday 19 September 2012 22:40:30 Lionel Trésaugues wrote: Yes. Me neither. The only parameter I couldn't check (due to my lack of knowledge) is the horizontal refresh rate. Any idea how I can

Re: Display hurtful on LCD screen with Wheezy

2012-09-19 Thread Ralf Mardorf
On Thu, 2012-09-20 at 00:03 +0100, Lisi wrote: On Wednesday 19 September 2012 23:38:48 Mark Allums wrote: On 9/19/2012 5:33 PM, Lisi wrote: On Wednesday 19 September 2012 22:40:30 Lionel Trésaugues wrote: Yes. Me neither. The only parameter I couldn't check (due to my lack of

Display hurtful on LCD screen with Wheezy

2012-09-18 Thread Lionel Trésaugues
Hello, I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition). Switching from XFCE to MATE doesn't lead to any improvements . My eyes start to suffer and soon, I can feel that

Re: Display hurtful on LCD screen with Wheezy

2012-09-18 Thread Lisi
Hi, Lionel, On Tuesday 18 September 2012 22:31:21 Lionel Trésaugues wrote: I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition). Switching from XFCE to MATE doesn't lead

Re: Display hurtful on LCD screen with Wheezy

2012-09-18 Thread Martin Smith
On 18/09/2012 22:52, Lisi wrote: Hi, Lionel, On Tuesday 18 September 2012 22:31:21 Lionel Trésaugues wrote: I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as Mint LMDE, XFCE or MATE edition). Switching

Re: Display hurtful on LCD screen with Wheezy

2012-09-18 Thread Rob Owens
On Tue, Sep 18, 2012 at 11:13:40PM +0100, Martin Smith wrote: A minimum refresh rate of 72Hz is recommended (same as average human heart rate) to minimize optical discomfort that you seem to be suffering. Less than that the screen will often jump about and make it difficult to see properly.

Re: Display hurtful on LCD screen with Wheezy

2012-09-18 Thread Doug
On 9/18/2012 8:01 PM, Rob Owens wrote: On Tue, Sep 18, 2012 at 11:13:40PM +0100, Martin Smith wrote: A minimum refresh rate of 72Hz is recommended (same as average human heart rate) to minimize optical discomfort that you seem to be suffering. Less than that the screen will often jump about and

Re: Display hurtful on LCD screen with Wheezy

2012-09-18 Thread lee
Lionel Trésaugues lionel.tresaug...@gmail.com writes: My eyes start to suffer and soon, I can feel that an headache is coming. I don't have this feeling at all when I am running either Ubuntu or any Ubuntu-based distribution (Mint XFCE or Cinnamon edition). I tried to adjust the fonts using

Re: Display hurtful on LCD screen with Wheezy

2012-09-18 Thread Mark Allums
On 9/18/2012 5:13 PM, Martin Smith wrote: On 18/09/2012 22:52, Lisi wrote: Hi, Lionel, On Tuesday 18 September 2012 22:31:21 Lionel Trésaugues wrote: I am experiencing a physical pain whenever I am in front of my computer running either Debian (Wheezy) or Debian-based distributions (such as