gpu-manager tries to use pci-stub module as a vga driver

Please attach your /var/log/gpu-manager.log and your /etc/init/gpu-manager.lspci. This is definitely a use case that I didn't handle.

This file includes stdout as well as stderr from running "gpu-manager --dry-run" without the workaround.

"Error : Failed to open /dev/dri" message appears on stderr. Last card is set to 1 and number of cards is set to 3. The first card (00:02.0) is the integrated i915 gpu. The second is a 290x card (01:00.0) and the third is the only one that is not using the pci-sub module (02:00.0).

With fake_lspci file that only includes the card intended to be used, the number of cards is set to 1 and the last cards number is set to 3.

Module seems to be missing from the attached information. Cards of interes are:

00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
 Subsystem: Gigabyte Technology Co., Ltd Device d000
 Flags: bus master, fast devsel, latency 0, IRQ 11
 Memory at d0400000 (64-bit, non-prefetchable) [size=4M]
 Memory at 90000000 (64-bit, prefetchable) [size=256M]
 I/O ports at f000 [disabled] [size=64]
 Capabilities: <access denied>
 Kernel driver in use: pci-stub

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii XT [Radeon R9 290X] (prog-if 00 [VGA controller])
 Subsystem: ASUSTeK Computer Inc. Device 046c
 Flags: bus master, fast devsel, latency 0, IRQ 64
 Memory at a0000000 (64-bit, prefetchable) [size=256M]
 Memory at b0000000 (64-bit, prefetchable) [size=8M]
 I/O ports at e000 [size=256]
 Memory at b0800000 (32-bit, non-prefetchable) [size=256K]
 Expansion ROM at b0840000 [disabled] [size=128K]
 Capabilities: <access denied>
 Kernel driver in use: pci-stub

02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde PRO [Radeon HD 7750 / R7 250E] (prog-if 00 [VGA controller])
 Subsystem: PC Partner Limited / Sapphire Technology Device e213
 Flags: bus master, fast devsel, latency 0, IRQ 63
 Memory at c0000000 (64-bit, prefetchable) [size=256M]
 Memory at d0000000 (64-bit, non-prefetchable) [size=256K]
 I/O ports at d000 [size=256]
 Expansion ROM at d0040000 [disabled] [size=128K]
 Capabilities: <access denied>
 Kernel driver in use: fglrx_pci

Ok, the fix should actually be quite simple. I can make sure that the gpu-manager ignores devices bound to the pci-stub module or to the pciback module (for the xen-pciback use case)

Can you test the packages available here, please? (attach the log)

http://people.canonical.com/~amilone/lp1397124/

Please do not use the fake lspci file for testing, so that I can see if the fix works.

Got a working desktop without the lspci file!

There is still an error message in log: "Error : Failed to open /dev/dri"

Could that be related to error messages from dmesg?

[ 5.484514] vgaarb: this pci device is not a vga device
[ 5.484520] vgaarb: this pci device is not a vga device
[ 5.484523] vgaarb: this pci device is not a vga device
[ 5.484530] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=none:owns=none
[ 5.484536] vgaarb: this pci device is not a vga device
[ 5.484539] vgaarb: this pci device is not a vga device
[ 5.484542] vgaarb: this pci device is not a vga device
[ 5.484546] vgaarb: this pci device is not a vga device
[ 5.484549] vgaarb: this pci device is not a vga device
[ 5.484553] vgaarb: this pci device is not a vga device
[ 5.484557] vgaarb: this pci device is not a vga device
[ 5.484560] vgaarb: this pci device is not a vga device
[ 5.484564] vgaarb: this pci device is not a vga device
[ 5.484568] vgaarb: this pci device is not a vga device
[ 5.484572] vgaarb: this pci device is not a vga device
[ 5.484576] vgaarb: this pci device is not a vga device
[ 5.484580] vgaarb: this pci device is not a vga device
[ 5.484584] vgaarb: this pci device is not a vga device
[ 5.484588] vgaarb: this pci device is not a vga device
[ 5.484595] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=none:owns=none
[ 5.484602] vgaarb: this pci device is not a vga device
[ 5.484611] vgaarb: this pci device is not a vga device
[ 5.484617] vgaarb: this pci device is not a vga device
[ 5.484623] vgaarb: this pci device is not a vga device
[ 5.484629] vgaarb: this pci device is not a vga device
[ 5.484634] vgaarb: this pci device is not a vga device
[ 5.484640] vgaarb: this pci device is not a vga device
[ 5.484647] vgaarb: this pci device is not a vga device
[ 5.744119] fglrx_pci 0000:02:00.0: irq 63 for MSI/MSI-X
[ 5.744494] <6>[fglrx] Firegl kernel thread PID: 2276
[ 5.744545] <6>[fglrx] Firegl kernel thread PID: 2277
[ 5.744598] <6>[fglrx] Firegl kernel thread PID: 2278
[ 5.744658] <6>[fglrx] IRQ 63 Enabled
[ 5.750607] <6>[fglrx] Reserved FB block: Shared offset:0, size:1000000
[ 5.750609] <6>[fglrx] Reserved FB block: Unshared offset:f838000, size:4000
[ 5.750609] <6>[fglrx] Reserved FB block: Unshared offset:f83c000, size:4c4000
[ 5.750610] <6>[fglrx] Reserved FB block: Unshared offset:3ffee000, size:12000
[ 6.150848] pci-stub 0000:01:00.0: irq 64 for MSI/MSI-X
[ 6.151213] <6>[fglrx] Firegl kernel thread PID: 2280
[ 6.151317] <6>[fglrx] Firegl kernel thread PID: 2281
[ 6.151424] <6>[fglrx] Firegl kernel thread PID: 2282
[ 6.151503] <6>[fglrx] IRQ 64 Enabled
[ 6.174634] <6>[fglrx] Reserved FB block: Shared offset:0, size:1000000
[ 6.174636] <6>[fglrx] Reserved FB block: Unshared offset:f738000, size:4000
[ 6.174637] <6>[fglrx] Reserved FB block: Unshared offset:f73c000, size:4c4000
[ 6.174637] <6>[fglrx] Reserved FB block: Unshared offset:fc00000, size:100000
[ 6.174638] <6>[fglrx] Reserved FB block: Unshared offset:ffff4000, size:c000

On 04-12-14 18:17:07, Martin Öhrling wrote:
> Got a working desktop without the lspci file!
>

Great, thanks for testing. I'll upload my fix soon.

> There is still an error message in log: "Error : Failed to open
> /dev/dri"
>
> Could that be related to error messages from dmesg?

No, that's just error output that I should silence, it's not that
relevant to gpu-manager's behaviour.

This bug was fixed in the package ubuntu-drivers-common - 1:0.2.98.9

---------------
ubuntu-drivers-common (1:0.2.98.9) vivid; urgency=medium

  * gpu-manager.c:
    - Ignore pci passthroughs (LP: #1397124).
 -- Alberto Milone <email address hidden> Mon, 08 Dec 2014 10:56:17 +0100