Since installing Linux 3.7.1, it happened twice that the firmware was not loaded.

[   16.874010] calling  radeon_init+0x0/0x1000 [radeon] @ 585
[   16.874017] [drm] radeon kernel modesetting enabled.
[   16.874410] [drm] initializing kernel modesetting (RS780 0x1002:0x9610 0x1849:0x9610).
[   16.874447] [drm] register mmio base: 0xFDFF0000
[   16.874449] [drm] register mmio size: 65536
[   16.874490] radeon 0000:01:05.0: BAR 6: can't assign [??? 0x00000000 flags 0x0] (bogus alignment)
[   16.874518] [drm:radeon_get_bios] *ERROR* Unable to locate a BIOS ROM
[   16.874565] radeon 0000:01:05.0: Fatal error during GPU init
[   16.874604] [drm] radeon: finishing device.
[   16.874606] [TTM] Memory type 2 has not been initialized
[   16.875830] radeon: probe of 0000:01:05.0 failed with error -22
[   16.875936] initcall radeon_init+0x0/0x1000 [radeon] returned 0 after 1811 usec

I did not experience that with Linux 3.7. User space is Debian Sid/unstable and it did not change between the update as far as I see.

When restarting it seems to work alright.

Though I do not see any suspicious commits for Linux 3.7.1.

$ git log --format=oneline v3.7..v3.7.1
cc8605070a58f12b79c62f369a0446d89a7ca337 Linux 3.7.1
53730b4c10781998bb872fce768f578ab4e09aec Staging: bcm: Add two products and remove an existing product.
5ebf81ae05c971619ab8a71504b47a4bc30efbb2 rcu: Fix batch-limit size problem
2083ca13781c4e88049b530c954dd48b3f30ddf2 USB: EHCI: bugfix: urb->hcpriv should not be NULL
9eb7f6942b507dc7f94ae380e025cd610d2de269 perf test: fix a build error on builtin-test
45d6c5dd9615c481066d3377ad35edc681393fac cdc-acm: implement TIOCSSERIAL to avoid blocking close(2)
f99b4b46d8e4a98fc1c4386a78f5a94296b6ebb0 ring-buffer: Fix race between integrity check and readers
7c3432b14e30e1aebb7a19ea52a05928b383b272 ring-buffer: Fix NULL pointer if rb_set_head_page() fails
5bab98768136ee54b82ef6dd7fc0ec1c41ef8431 ftrace: Clear bits properly in reset_iter_read()
5338f92b421c257ff09d0ef65fde4447eccb0c95 xhci: Extend Fresco Logic MSI quirk.
efda03ca0a93fb485723ae3178b75e59af362474 USB: OHCI: workaround for hardware bug: retired TDs not added to the Done Queue
efcda31e6023a8593ba93c556fe134023b77ba56 ACPI / video: Add "Asus UL30VT" to ACPI video detect blacklist
77dfd2e6c6d83aa806e56e297b8c9cc122a3b0e4 ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000
9c3f6f654da8dc484dabaa4c8805f70d64d7b000 ACPI / PNP: Do not crash due to stale pointer use during system resume
87f8b7c1928dac3cd0df0d1e6682edb29c8c5c78 ACPI / PM: Add Sony Vaio VPCEB1S1E to nonvs blacklist.
90e760ae6415d828b729700c2da254a2266ffdb1 ACPI / battery: Correct battery capacity values on Thinkpads
ef984b4cd5baa2f202adcc77e03ff2953cc71df9 USB: mark uas driver as BROKEN
bf9694fb59594c92d791bc728b5aa13dab06a15a USB: cp210x: add Virtenio Preon32 device id
bf9a2254ff6fd799df438f5b392c3e884fd03177 usb: ftdi_sio: fixup BeagleBone A5+ quirk
0b23bbd5a7070e0ba00de1d742c1f3269413ea9c USB: ftdi_sio: Add support for Newport AGILIS motor drivers
a634f92ce1b353f2f3ddd9b331a943414fd50f31 USB: option: blacklist network interface on Huawei E173
673531802c45aaccb2dec0c6ed2fe6013d155d50 USB: add new zte 3g-dongle's pid to option.c
a305b4e87b0e4dca16ec8856bf5d1d44ddbd4763 x86: hpet: Fix masking of MSI interrupts
dc96e8023d0803688f1e56a9f52f7213bb2a8204 ezusb: add dependency to USB
83c9bff26b4445bfaebbe9317d4ad73f69c68fe6 telephony: ijx: buffer overflow in ixj_write_cid()
ec92de46a243f6d014c8c42276b4b0cd72c4c9c5 x86,AMD: Power driver support for AMD's family 16h processors
5a11e1dcbc8b64bc76dde2a8c96646bab5e41d6a clk: ux500: fix bit error
13a4fcec5484b83b61926d5304d86349e5530027 mm: dmapool: use provided gfp flags for all dma_alloc_coherent() calls