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[SOLVED]I'v followed gentoo handbook and have some questions
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whjeon
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PostPosted: Sat Nov 25, 2017 1:40 am    Post subject: [SOLVED]I'v followed gentoo handbook and have some questions Reply with quote

I've installed on UEFI/GPT gentoo with arch linux iso.
And by using
Code:
#genkernel --menuconfig all

I've configured my kernel.(followed handbook page on 'xorg','kde-plasma','intel' becaulse I have only intel gpu in my laptop)

When I finished installation, I added 'konsole'and 'google chrome'and changed package.license for installing google chrome.

Now, my laptop's youtube video, or plain web site text seems like less optimized.
(Situation: 1. youtube slows at full-screen.
2. youtube sound sync slightly doesn't match with screen.
3. when I'm reading text, there's some blur on screen, through 2~3 lines.(regardless of mouse pointer location)
those were not happened when I'm using other distos, and I'm assuming these were happening by something with video drivers)

What else should I do for my laptop optimization? or what else should I read for it?
Thx for reading :D


Last edited by whjeon on Sun Dec 03, 2017 11:00 am; edited 1 time in total
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Jaglover
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PostPosted: Sat Nov 25, 2017 2:37 am    Post subject: Reply with quote

Look at your Xorg log, use wgetpaste if you need help interpreting it.
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whjeon
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PostPosted: Sat Nov 25, 2017 6:30 am    Post subject: How can I find Xorg log? Reply with quote

Jaglover wrote:
Look at your Xorg log, use wgetpaste if you need help interpreting it.

Sorry if this is a dumb question, but I don't know how to find Xorg log :cry:
And What should I look for in log?

[Edit 0]
I found log at /var/log/Xorg.0.log and second question still remains. What is related with my situation among these?

[Edit 1]-My Xorg.0.log
https://paste.pound-python.org/show/7OolNJ1C8qHm3DOwjssY/
Thx for your help again :D

[Edit 2]-I've installed vesa & fbdev after posting above.
Symptoms remain
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krinn
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PostPosted: Sat Nov 25, 2017 12:20 pm    Post subject: Re: How can I find Xorg log? Reply with quote

whjeon wrote:
I found log at /var/log/Xorg.0.log and second question still remains. What is related with my situation among these?

No idea myself, but if jaglover wish look at it, he have something in mind, and at least you need something to start with.

Code:
[    20.422] Kernel command line: BOOT_IMAGE=/kernel-genkernel-x86_64-4.12.12-gentoo root=UUID=f5ae869b-2318-4658-bc76-06a330680d81 ro pci=nomsi

why do you disable msi?
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whjeon
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PostPosted: Sat Nov 25, 2017 1:12 pm    Post subject: Re: How can I find Xorg log? Reply with quote

krinn wrote:
why do you disable msi?

When I boot the system, there is infinite loop saying "PCIe bus error~..."
And I found "pci=nomsi"can fix this.
I've used that kernel parameter for 3months and fixed that problem.
Exactly same as this happend to mehttps://askubuntu.com/questions/771899/pcie-bus-error-severity-corrected
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tuggbuss
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PostPosted: Sat Nov 25, 2017 1:15 pm    Post subject: Re: How can I find Xorg log? Reply with quote

whjeon wrote:
krinn wrote:
why do you disable msi?

When I boot the system, there is infinite loop saying "PCIe bus error~..."
And I found "pci=nomsi"can fix this.
I've used that kernel parameter for 3months and fixed that problem.
Exactly same as this happend to mehttps://askubuntu.com/questions/771899/pcie-bus-error-severity-corrected


You can use "pci=nommconf" i belive
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whjeon
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PostPosted: Sat Nov 25, 2017 1:36 pm    Post subject: Re: How can I find Xorg log? Reply with quote

tuggbuss wrote:
You can use "pci=nommconf" i belive

But the problem is not there. It was fine with "pci=nomsi".
Do you think that can affect video performance even though it wasn't with any other distros?
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NeddySeagoon
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PostPosted: Sat Nov 25, 2017 2:01 pm    Post subject: Reply with quote

whjeon,

Xorg.0.log:
[    20.526] (II) intel(0): switch to mode 1920x1080@60.0 on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none
[    20.532] (II) intel(0): Setting screen physical size to 508 x 285


Are you forcing a screen resolution?
Normally, Xorg prints a list of supported screen resolutions but not here.

If 1920x1080 is your native screen resolution, that's OK.
If its not, the edges in the image will look fuzzy, as its not possible to rescale one digital image onto a different resolution display surface, unless the conversion factor is a whole number

A 2560x1600 screen can display a 1280x800 image correctly. Each pixel in the image maps to exactly 4 on screen pixels.
It looks really ugly, as you describe, when fractional pixels are involved.
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whjeon
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PostPosted: Sat Nov 25, 2017 2:04 pm    Post subject: Reply with quote

NeddySeagoon wrote:

If 1920x1080 is your native screen resolution, that's OK.

Yes, my laptop has 1920x1080.
And I'm assuming that this symptoms are caused by video related drivers.
But I cannot sure, because I don't know what to look for.
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Jaglover
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PostPosted: Sat Nov 25, 2017 4:34 pm    Post subject: Reply with quote

Have you tried modesetting instead of Intel? Without xorg.conf in place.
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whjeon
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PostPosted: Sun Nov 26, 2017 1:44 am    Post subject: Reply with quote

Jaglover wrote:
Have you tried modesetting instead of Intel? Without xorg.conf in place.

I need more explain with that. I don't understand what is "modesetting" and "xorg.conf".
Do you mean, I should change my kernel configuration and boot with new kernel? 8O
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Jaglover
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PostPosted: Sun Nov 26, 2017 3:01 am    Post subject: Reply with quote

Not a kernel issue. Modesetting is the default Xorg driver for Intel graphics. To load Intel driver you need xorg.conf or equivalent in xorg.conf.d. Without xorg.conf the modesetting driver should load.
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charles17
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PostPosted: Sun Nov 26, 2017 8:45 am    Post subject: Reply with quote

whjeon wrote:
I need more explain with that. I don't understand what is "modesetting" and "xorg.conf".
See https://wiki.gentoo.org/wiki/Intel#Modesetting_DDX
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whjeon
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PostPosted: Sat Dec 02, 2017 8:35 am    Post subject: Reply with quote

Jaglover wrote:
Modesetting is the default Xorg driver for Intel graphics.

Modesetting fixed it! Thanks! :D
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