Ubuntu

Can't switch GPU drivers

Asked by Gristle

Had some issues with graphics performance earlier (which turned out to be due to dust buildup in my GPU fan), and one of the things I tried to fix it was switch the GPU driver to proprietary. After that turned out to do nothing, I switched back to the open source driver. When I rebooted, the system only recognized one screen (a "built-in display", which is impressive considering I'm using a desktop PC), which, according to it, was 4:3, with no option to change the resolution. "Detect displays" did nothing, so I checked the GPU driver, only to discover that, according to my system, I am running a manually installed driver and all the other options (both open source and proprietory) are greyed out. I'm using Ubuntu 14.04 64 bit and a Radeon HD 5750 GPU.

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actionparsnip (andrew-woodhead666) said : 		#1

What is the output of:

sudo lshw -C display; lsb_release -a; uname -a

Thanks

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Gristle (slartibartfass13) said : 		#2

 *-display
       description: VGA compatible controller
       product: Juniper PRO [Radeon HD 5750]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=fglrx_pci latency=0
       resources: irq:16 memory:d0000000-dfffffff memory:fbde0000-fbdfffff ioport:c000(size=256) memory:fbdc0000-fbddffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
Linux gristle-MS-7616 3.13.0-61-generic #100-Ubuntu SMP Wed Jul 29 11:21:34 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

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actionparsnip (andrew-woodhead666) said : 		#3

You seem to be using the proprietary video driver. Is there not an ATI config application that comes down with the driver?

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Gristle (slartibartfass13) said : 		#4

Doesn't look that way. At least searching for "ATI" in my applications doesn't get any promising results.

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Gristle (slartibartfass13) said : 		#5

I managed to reinstall the open source driver from the Software Center. Never occurred to me to check for it in there. Thank you very much for your effort.

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Gristle (slartibartfass13) said : 		#6

...nevermind. According to my system (at least the "software and updates" window), I am now running the proprietary driver. Trying to switch to open source causes the same problems as before, and as it is there are plenty of glitches, which often make the system unusable.

 *-display
       description: VGA compatible controller
       product: Juniper PRO [Radeon HD 5750]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=fglrx_pci latency=0
       resources: irq:52 memory:d0000000-dfffffff memory:fbde0000-fbdfffff ioport:c000(size=256) memory:fbdc0000-fbddffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
Linux gristle-MS-7616 3.13.0-61-generic #100-Ubuntu SMP Wed Jul 29 11:21:34 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

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actionparsnip (andrew-woodhead666) said : 		#7

if you blacklist the module then reboot, the driver will not be loaded, and he open source driver will be used.

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Gristle (slartibartfass13) said : 		#8

Just to clarify, which module would that be? I blacklisted fglrx_pci, but that doesn't seem to have had any effect.

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actionparsnip (andrew-woodhead666) said : 		#9

run:

echo "blacklist fglrx" | sudo tee -a /etc/modprobe.d/blacklist.conf > /dev/null

echo "blacklist fglrx_pci" | sudo tee -a /etc/modprobe.d/blacklist.conf > /dev/null

echo "blacklist amd_iommu_v2" | sudo tee -a /etc/modprobe.d/blacklist.conf > /dev/null

reboot to test

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Gristle (slartibartfass13) said : 		#10

That did have an effect, but now I'm back to the "single display at 4:3 resolution" issue...

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Manfred Hampl (m-hampl) said : 		#11

What is now the output of

sudo lshw -C display
sudo ubuntu-drivers devices

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Gristle (slartibartfass13) said : 		#12

I since had to reboot again due to another issue, and oddly enough it seems to be working right now. I'm just reluctant to close this in case things get glitchy again.

The output is:
*-display
       description: VGA compatible controller
       product: Juniper PRO [Radeon HD 5750]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:52 memory:d0000000-dfffffff memory:fbde0000-fbdfffff ioport:c000(size=256) memory:fbdc0000-fbddffff

== /sys/devices/pci0000:00/0000:00:03.0/0000:01:00.0 ==
modalias : pci:v00001002d000068BEsv0000174Bsd0000E160bc03sc00i00
model : Juniper PRO [Radeon HD 5750]
vendor : Advanced Micro Devices, Inc. [AMD/ATI]
driver : fglrx - distro non-free
driver : fglrx-updates - distro non-free
driver : xserver-xorg-video-ati - distro free builtin recommended

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Launchpad Janitor (janitor) said : 		#13

This question was expired because it remained in the 'Open' state without activity for the last 15 days.