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  #1  
Old 8th August 2012, 01:00 AM
gadgetwiz Offline
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Question What video driver Is being loaded?

Video Card: nVidia G86 [GeForce 8500 GT] rev a1
Display: Envision LCD Monitor, Model G19LWk

I'm tying to help someone with a Fedora 17 install and they are only getting a few generic display resolutions from which to select, none of them are 16x9/10 ratio resolutions that are supported by the monitor.

I can't seem to tell which driver is being loaded. The log shows it loading Nouveau, then later down the list, it looks like it's loading VESA.

Can someone explain what's going on here and perhaps suggest a method to get the higher resolutions supported by the display?

I'm attaching the Xorg.0.log and output from lspci -v

Thanks!!
Attached Files
File Type: log Xorg.0.log (72.9 KB, 70 views)
File Type: txt lspci -v.txt (5.2 KB, 72 views)
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  #2  
Old 8th August 2012, 03:06 AM
marko Offline
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Re: What video driver Is being loaded?

Try the lspci -v again but add the 'k' option

Quote:
lspci -kv
then look at the line "Kernel driver in use:"
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  #3  
Old 8th August 2012, 03:16 AM
gadgetwiz Offline
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Re: What video driver Is being loaded?

Thanks for the suggestion but I tried the -k option and it doesn't display the kernel driver for the video card either.

Code:
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01)
        Subsystem: Giga-byte Technology GA-8I945PG-RH Mainboard
        Kernel driver in use: i801_smbus
01:00.0 VGA compatible controller: nVidia Corporation G86 [GeForce 8500 GT] (rev a1)
        Subsystem: XFX Pine Group Inc. Device 230a
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI
Express Gigabit Ethernet controller (rev 01)
        Subsystem: Giga-byte Technology GA-EP45-DS5 Motherboard
        Kernel driver in use: r8169
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  #4  
Old 8th August 2012, 04:53 AM
DBelton Offline
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Re: What video driver Is being loaded?

look at the output of lsmod and see what it shows for video

lspci -k should have shown you, so don't know what's going on there.
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  #5  
Old 8th August 2012, 06:22 AM
mwesten Offline
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Re: What video driver Is being loaded?

Xorg.log shows that nouveau is loaded, but fails, and vesa is loaded as fallback. The vesa video bios on the card does not support widescreen modes and the monitor wants 1440x900, so it uses only the basic ones (1280x1024, etc.)

I see "nomodeset" in the kernel command line, but nouveau requires KMS. Edit the grub2 configuration and take that parameter out.
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Last edited by mwesten; 8th August 2012 at 06:33 AM.
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Old 8th August 2012, 06:45 PM
gadgetwiz Offline
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Re: What video driver Is being loaded?

Thanks for the confirmation, mwesten.

The F17 Live CD wouldn't boot without nomodeset so F17 was installed using the nomodeset option on the kernel boot line. Perhaps it keeps that option after F17 is installed when it's added to the Live CD kernel boot line.

I'll try editing the kernel boot line and removing nomodeset. Will report back my results tomorrow. Hopefully, it will boot without nomodeset, as I'd like to run the nouveau driver and try to avoid the proprietary nVidia driver, if possible.

---------- Post added at 11:45 AM ---------- Previous post was at 12:34 AM ----------

OK, I asked the user to test the system with nomodeset removed and the system would not boot.

Being that nouveau requires KMS, where do I go from here?
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  #7  
Old 8th August 2012, 08:37 PM
mwesten Offline
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Re: What video driver Is being loaded?

What does it do? If it's just getting hung up somewhere, I would remove rhgb and quiet as well. Whatever is on the screen when it stops might indicate what the problem is.
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Old 17th August 2012, 05:41 AM
gadgetwiz Offline
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Re: What video driver Is being loaded?

Sorry it took so long to get back but I'm trying to troubleshoot this issue for someone else so I don't actually have access to the PC.

Anyway, when booting without the nomodeset switch, it appears to freeze as it attempts to start X. The user reports that it seems to be in a cyclical loop displaying the following..

[drm] nouveau 0000:01:00: Failed to idle channel 2

It basically looks like this comment in the following bug report.

Any ideas on what I could try next?
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Old 17th August 2012, 04:45 PM
mwesten Offline
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Re: What video driver Is being loaded?

Well, assuming that your issue is the same as that bug, you could try downgrading to a 3.4 kernel, since that seems to be the source of the issue. The author of that bug uses nouveau.noaccel=1, so that's another option for a temporary solution. Then there is the nvidia driver, which may (or may not) work right. Outside of those, another card should do the trick.
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Old 17th August 2012, 07:34 PM
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Re: What video driver Is being loaded?

If you can talk your friend into upgrading to an AMD RADEON, it should be plug and play. Nvidia hardware is a nightmare in Linux, because the blob driver is dangerous and unpredictable, and the open driver is reverse engineered hackwork.

If not, definitely take mwesten's suggestion and nouveau.noaccel=1
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Old 17th August 2012, 11:41 PM
gadgetwiz Offline
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Re: What video driver Is being loaded?

Quote:
Originally Posted by mwesten View Post
Well, assuming that your issue is the same as that bug, you could try downgrading to a 3.4 kernel, since that seems to be the source of the issue. The author of that bug uses nouveau.noaccel=1, so that's another option for a temporary solution. Then there is the nvidia driver, which may (or may not) work right. Outside of those, another card should do the trick.
Well, we have already tried the noveau.noaccel=1 but it still required the nomodeset switch to boot and we are seeing the same problem with 3.4 & 3.5 kernels. It may not be that exact bug but I think it's a similar issue. I guess she just has one of those nVidia cards that doesn't work properly with nouveau, even though it's supposed to be supported.

Everything seems to work OK, other than the ability to set higher screen resolutions, even the openGL stuff required for Gnome3 shell works. In the "old days", we could specify an xorg.conf and tell it what screen resolutions to use. I wonder of that is a possibility nowadays?

My concern with trying the proprietary nVidia drivers is getting back to the configuration we have now if the nVidia drivers go south. How difficult is it to revert back to nouveau/vesa if the nVidia drivers don't work?

Quote:
Originally Posted by droidhacker View Post
If you can talk your friend into upgrading to an AMD RADEON, it should be plug and play. Nvidia hardware is a nightmare in Linux, because the blob driver is dangerous and unpredictable, and the open driver is reverse engineered hackwork.
I've actually had great success using the proprietary nVidia drivers all the way up until F15. After that, they black balled my nVidia card and forced me into another card. A friend gave me an old ATI X700 and it is working ok in F17 using the default kernel Radeon drivers, not nearly as fast and glitch free as my old nVidia MX-4000 but it does work.
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Last edited by gadgetwiz; 18th August 2012 at 12:03 AM.
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  #12  
Old 19th August 2012, 04:30 PM
mwesten Offline
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Re: What video driver Is being loaded?

It looks like you're running out of options.

AFAIK, the vesa modes are fixed in the BIOS firmware of the card. If the one you need isn't there, then the card just won't do it, and no xorg.conf can overcome that. I've heard of a program called 915resolution which patches the video BIOS of Intel cards to add any needed modes, but I don't think there's an equivalent for Nvidia.

I can't tell you much about the proprietary drivers as I've only tried them once (and they didn't do well).
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Old 2nd September 2012, 06:07 AM
gadgetwiz Offline
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Re: What video driver Is being loaded?

Just wanted to update this thread. The resolution problems were solved by installing the nVidia drivers (akmod) and dumping the buggy noveau drivers.

The nVidia drivers are faster, much less buggy and perform better, overall.

I should have just used them from the beginning.

Thanks!!
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Last edited by gadgetwiz; 2nd September 2012 at 06:09 AM.
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