I did a full upgrade on my Debian system (jessie/sid).Unfortunately there is now a 30 second gap on the bootup and I really don't know where it comes from and where I have to look to find it. I looked at /var/log/dmesg and found some lines that could be interesting. Notice the gap between 27.280227 and 56.835253.[   27.261104] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0[   27.280207] cfg80211: World regulatory domain updated:[   27.280213] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)[   27.280216] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm)[   27.280218] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)[   27.280220] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm)[   27.280223] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz), (N/A, 2000 mBm)[   27.280225] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm)[   27.280227] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm)[   27.843406] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off[   56.835253] EXT4-fs (dm-1): re-mounted. Opts: (null)[   57.068560] EXT4-fs (dm-1): re-mounted. Opts: errors=remount-ro[   57.615554] lp: driver loaded but no devices found[   57.661815] ppdev: user-space parallel port driver[   57.855124] fuse init (API version 7.22)[   58.123866] Adding 4886524k swap on /dev/mapper/encrypted-swap.  Priority:-1 extents:1 across:4886524k[   58.327537] EXT4-fs (sda4): mounted filesystem with ordered data mode. Opts: (null)[   59.137990] RPC: Registered named UNIX socket transport module.[   59.137996] RPC: Registered udp transport module.[   59.137998] RPC: Registered tcp transport module.[   59.138000] RPC: Registered tcp NFSv4.1 backchannel transport module.Searching for [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off points to some graphical bugs. Since I have sometimes problems with my graphiccards (switchable graphic card) this could be a reason.00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])Subsystem: Dell Device 04cdFlags: bus master, fast devsel, latency 0, IRQ 52Memory at f6400000 (64-bit, non-prefetchable) [size=4M]Memory at d0000000 (64-bit, prefetchable) [size=256M]I/O ports at f000 [size=64]Expansion ROM at <unassigned> [disabled]Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-Capabilities: [d0] Power Management version 2Capabilities: [a4] PCI Advanced FeaturesKernel driver in use: i91501:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Whistler [Radeon HD 6630M/6650M/6750M/7670M/7690M] (prog-if 00 [VGA controller])Subsystem: Dell Radeon HD 6630MFlags: bus master, fast devsel, latency 0, IRQ 53Memory at e0000000 (64-bit, prefetchable) [size=256M]Memory at f7b20000 (64-bit, non-prefetchable) [size=128K]I/O ports at e000 [size=256]Expansion ROM at f7b00000 [disabled] [size=128K]Capabilities: [50] Power Management version 3Capabilities: [58] Express Legacy Endpoint, MSI 00Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>Capabilities: [150] Advanced Error ReportingKernel driver in use: fglrx_pciAs I said, I have no clue where to look at and what to search for. I'm also happy for some keywords that might help.I hope I provided the information you need. If not it would be nice if you also can tell me which command I have to execute to get the output you want, since I'm still not very familiar with the 'deeper system'.Thank you very much,rocco 
30 second gap in boot process
debian;boot;graphics
If you don't use systemd, it could be Debian bug 754987 in udev, since it involves a 30-second delay.The consequence of this bug in my dmesg log file:[   19.809738] input: HP WMI hotkeys as /devices/virtual/input/input14[   25.107974] WARNING! power/level is deprecated; use power/control instead[   50.739902] Adding 19800076k swap on /dev/sda5.  Priority:-1 extents:1 across:19800076k FS[   50.780205] EXT4-fs (sda1): re-mounted. Opts: (null)[   51.259666] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro[   52.346718] lp: driver loaded but no devices found[   52.469463] loop: module loaded[   52.491077] smsc47b397: found SMSC SCH5317 (base address 0x0480, revision 1)[   52.538276] fuse init (API version 7.23)It looks similar to yours.