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  #31  
Old 1st June 2015, 02:04 PM
oconnell99 Offline
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linuxfedorafirefox
Re: distorted graphics

sumitbhardwaj, thank you very much. It worked for me too. Well, actually we must wait to Fedora team to solve this problem. By the way, if sumitbhardwaj doesnt have any problem, i would like to post his solution in bugzilla and freedesktop cause therea a lot of people with this issue, and wiill be a interesting information to Fedora team.

Thank U very much!!
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  #32  
Old 1st June 2015, 02:27 PM
sumitbhardwaj Offline
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Re: distorted graphics

You're most welcome @Ankit360, @Dutchman and @gireeshkkm Great to hear this.

Actually the current Intel driver defaults to SNA (Sandybridge New Acceleration model) for graphics acceleration which I think was introduced with Core i series of processors. Before that, the default was UXA (Unified Acceleration Architecture). Since the GMA X4500 card you guys are using was from that time, I though may be it will work better with UXA, and it did

Cheers! Have fun!
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  #33  
Old 1st June 2015, 03:13 PM
kkshethin Offline
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windows_98_nt_2000firefox
Re: distorted graphics

I have on one computer somthing like Intel Corporation Mobile GM945 Integrated Graphics Controller. I have same problem, but alas i have not waited for this solution and instead replaced by linuxmint-xfce-17.1.
In future, i may try this solution or it might be incorporated in updates. who knows future
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  #34  
Old 1st June 2015, 03:14 PM
atreyu Offline
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Re: distorted graphics

@sumitbhardwaj,

i tried updating the driver (2.99.917-10.20150526) and rebooted...and no joy.

i then tried the xorg.conf "uxa" suggestion and rebooted...and so far so good.

add me to the list of grateful ones!
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  #35  
Old 1st June 2015, 04:14 PM
sumitbhardwaj Offline
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linuxfedorafirefox
Re: distorted graphics

I am thinking of raising an issue with the Intel Open Source Center Team or/and Fedora team to do this detection of older chipsets (release before the SandyBridge architecture) in the driver itself and not default to SNA for every chip. That will resolve the issue at source.

But the thing is, if this detection was not in place, how this was working in the first place in Fedora 20 or 21? Let me take this up in devel mailing list first.
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  #36  
Old 1st June 2015, 04:26 PM
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DBelton Offline
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Re: distorted graphics

I believe that SNA was working for the older chips, and something just recently changed.

Don't know what the deal is, but the same version kernel/drivers works fine on Fedora 21, but has problems on Fedora 22.

It might possibly be the change to a rootless X server?
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  #37  
Old 1st June 2015, 04:36 PM
sumitbhardwaj Offline
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Re: distorted graphics

@DBelton There are two changes I guess in Fedora 22. First, as you said, the X Server runs rootless now and second is the recompilation of some of the C++ code using GCC5 to match the ABI level. If I am not wrong, the F22 version of intel driver is also compiled with GCC 5 now.

Any of these could have caused this in my opinion.
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  #38  
Old 1st June 2015, 04:42 PM
sumitbhardwaj Offline
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Re: distorted graphics

Quote:
Originally Posted by oconnell99 View Post
sumitbhardwaj, thank you very much. It worked for me too. Well, actually we must wait to Fedora team to solve this problem. By the way, if sumitbhardwaj doesnt have any problem, i would like to post his solution in bugzilla and freedesktop cause therea a lot of people with this issue, and wiill be a interesting information to Fedora team.

Thank U very much!!
You can post it, no issues. Although I am writing an article for my blog as well. So you can either link this thread or my blog article there, whatever you find preferable.
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  #39  
Old 2nd June 2015, 08:45 PM
itpro Offline
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Thumbs up Re: distorted graphics

Quote:
Originally Posted by sumitbhardwaj View Post
@Ankit360: Your log shows you are logged in using "liveuser" account. Are you running the system in from live dvd? Have you not been able to install it?

Anway, if anybody is having this problem on an installed system, please try out below steps :

Create a new file called /etc/X11/xorg.conf.d/20-intel.conf with below text:

Code:
Section "Device"
        Identifier  "card0"
        Driver      "intel"
        Option      "AccelMethod"  "uxa"
EndSection
Reboot and see if it resolves your issue. I am not sure whether this can be done on a live dvd. But you can try coz if the live dvd is running from a pen drive, there is some storage space available on it.
Spot on! Problem solved. Excellent! and big thankyou.
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  #40  
Old 3rd June 2015, 02:26 AM
sumitbhardwaj Offline
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linuxfedorafirefox
Re: distorted graphics

@oconnell99:

Here is the blog post that describes the problem and solution to this issue. Feel free to link to it anywhere you like :

http://krazyabouttechnology.blogspot...aphics-in.html
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  #41  
Old 4th June 2015, 09:05 AM
Geoffnewzealand Offline
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Re: distorted graphics

Kia ora Sumit,

Thanks for your work on this issue! Could you please explain your solution more clearly for lay people?

what text editor?

how do we create this folder?

where do we save it?

Thank you!

Geoff
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  #42  
Old 5th June 2015, 06:23 AM
CMAR6O6 Offline
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linuxfedorafirefox
Re: distorted graphics

Quote:
Originally Posted by ankit360 View Post
i m using ubuntu 14.04 on my office desktop . now want to switch to fedora 22

but i m getting distorted graphics . desktop has intel g41 integrated graphics card

posting some screenshot

lspci output

Code:
00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)


I am having very weird things happen too.. I just installed Feddy ( Clean install ) of F22 yesterday and this keeps happening!

https://docs.google.com/document/d/1...it?usp=sharing
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  #43  
Old 6th June 2015, 12:08 AM
kevmif Offline
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linuxchrome
Re: distorted graphics

Thank you Sumit. Your fix has enabled me to use Fedora 22.

Question. Are there any notable disadvantages to using UXA over SNA?

Thanks
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  #44  
Old 6th June 2015, 06:05 AM
Geoffnewzealand Offline
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linuxopera
Re: distorted graphics

Hi, could someone explain how to do this fix in simple terms - or is this vital fix reserved for experts only??
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  #45  
Old 7th June 2015, 12:44 AM
rwright Offline
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linuxfirefox
Re: distorted graphics

It's really very simple, not for experts only...just copy and paste the code shown above into a text editor, save it, and place the new file in your etc/X11/xorg.conf.d/ folder, and do this with either sudo or su -. Reboot, and you should be good to go. I hope this helps.
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