dmesg | grep -E 'i915|nouveau':

[    5.690301] intel ips 0000:00:1f.6: failed to get i915 symbols, graphics turbo disabled
[    6.243478] nouveau 0000:02:00.0: power state changed by ACPI to D0
[    6.243531] nouveau 0000:02:00.0: power state changed by ACPI to D0
[    6.243536] nouveau 0000:02:00.0: enabling device (0106 -> 0107)
[    6.243544] nouveau 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    6.243549] nouveau 0000:02:00.0: setting latency timer to 64
[    6.245645] [drm] nouveau 0000:02:00.0: Detected an NVc0 generation card (0x0c1880a1)
[    6.253545] [drm] nouveau 0000:02:00.0: Attempting to load BIOS image from PRAMIN
[    6.263268] [drm] nouveau 0000:02:00.0: ... BIOS signature not found
[    6.263270] [drm] nouveau 0000:02:00.0: Attempting to load BIOS image from PROM
[    6.263279] [drm] nouveau 0000:02:00.0: ... BIOS signature not found
[    6.263281] [drm] nouveau 0000:02:00.0: Attempting to load BIOS image from PCIROM
[    6.273160] nouveau 0000:02:00.0: Invalid ROM contents
[    6.273308] [drm] nouveau 0000:02:00.0: ... BIOS signature not found
[    6.273310] [drm] nouveau 0000:02:00.0: Attempting to load BIOS image from ACPI
[    6.356824] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    6.356829] i915 0000:00:02.0: setting latency timer to 64
[   13.110290] [drm] nouveau 0000:02:00.0: ... appears to be valid
[   13.110294] [drm] nouveau 0000:02:00.0: BIT BIOS found
[   13.110297] [drm] nouveau 0000:02:00.0: Bios version 70.08.19.00
[   13.110298] [drm] nouveau 0000:02:00.0: Pointer to BIT loadval table invalid
[   13.110386] [drm] nouveau 0000:02:00.0: TMDS table version 2.0
[   13.110389] [drm] nouveau 0000:02:00.0: Found Display Configuration Block version 4.0
[   13.110391] [drm] nouveau 0000:02:00.0: Raw DCB entry 0: 02014300 00000000
[   13.110393] [drm] nouveau 0000:02:00.0: Raw DCB entry 1: 02021362 00020010
[   13.110395] [drm] nouveau 0000:02:00.0: Raw DCB entry 2: 0000000e 00000000
[   13.110398] [drm] nouveau 0000:02:00.0: DCB connector table: VHER 0x40 5 16 4
[   13.110400] [drm] nouveau 0000:02:00.0:   0: 0x00000340: type 0x40 idx 0 tag 0xff
[   13.110402] [drm] nouveau 0000:02:00.0:   1: 0x00001061: type 0x61 idx 1 tag 0x07
[   13.110404] [drm] nouveau 0000:02:00.0:   2: 0x00000147: type 0x47 idx 2 tag 0xff
[   13.110406] [drm] nouveau 0000:02:00.0:   3: 0x00002346: type 0x46 idx 3 tag 0x08
[   13.110408] [drm] nouveau 0000:02:00.0:   4: 0x00000400: type 0x00 idx 4 tag 0xff
[   13.110410] [drm] nouveau 0000:02:00.0:   5: 0x00000210: type 0x10 idx 5 tag 0xff
[   13.110411] [drm] nouveau 0000:02:00.0:   6: 0x00000211: type 0x11 idx 6 tag 0xff
[   13.110413] [drm] nouveau 0000:02:00.0:   7: 0x00000213: type 0x13 idx 7 tag 0xff
[   13.110428] [drm] nouveau 0000:02:00.0: Adaptor not initialised, running VBIOS init tables.
[   13.110430] [drm] nouveau 0000:02:00.0: Parsing VBIOS init table 0 at offset 0xD2F9
[   13.134697] [drm] nouveau 0000:02:00.0: 0xD2E4: i2c wr fail: -6
[   13.175316] [drm] nouveau 0000:02:00.0: Parsing VBIOS init table 1 at offset 0xD93F
[   13.202398] [drm] nouveau 0000:02:00.0: Parsing VBIOS init table 2 at offset 0xEAD4
[   13.202404] [drm] nouveau 0000:02:00.0: Parsing VBIOS init table 3 at offset 0xEAD8
[   13.202463] [drm] nouveau 0000:02:00.0: Parsing VBIOS init table 4 at offset 0xEBC0
[   13.202464] [drm] nouveau 0000:02:00.0: Parsing VBIOS init table at offset 0xEC25
[   13.241557] [drm] nouveau 0000:02:00.0: 3 available performance level(s)
[   13.241561] [drm] nouveau 0000:02:00.0: 0: memory 135MHz core 50MHz shader 101MHz voltage 850mV timing 0
[   13.241563] [drm] nouveau 0000:02:00.0: 1: memory 324MHz core 202MHz shader 405MHz voltage 850mV timing 1
[   13.241566] [drm] nouveau 0000:02:00.0: 3: memory 800MHz core 500MHz shader 1000MHz voltage 900mV timing 2
[   13.241746] [drm] nouveau 0000:02:00.0: Detected 512MiB VRAM
[   13.250967] [drm] nouveau 0000:02:00.0: 512 MiB GART (aperture)
[   13.250975] [drm] nouveau 0000:02:00.0: PGRAPH: unsupported chipset, please report!
[   13.326917] [drm] nouveau 0000:02:00.0: allocated 1024x768 fb: 0x8020000, bo ffff88014dc97c00
[   13.347868] fb0: nouveaufb frame buffer device
[   13.347874] [drm] Initialized nouveau 0.0.16 20090420 for 0000:02:00.0 on minor 0
[   13.408991] i915 0000:00:02.0: irq 49 for MSI/MSI-X
[   14.283392] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 1
[   15.888268] intel ips 0000:00:1f.6: i915 driver attached, reenabling gpu turbo