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Offline finotti

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  • Posts: 143
Screen Freezes
« on: 2020/06/26, 03:50:56 »
I'm having the following problem with my Lenovo t440p: once the screen locks, it freezes.  (It might not freeze right away, maybe after a while being locked.  I'm not sure.)  But it seems that it is running.  I can type my password, but nothing changes.  But, if I switch to a VT (with Ctrl+Alt+Fn) and come back (with Ctrl+Alt+F7), it is unlocked.

So, basically switching back and forth to a VT unfreezes the screen.

Here is some info on the system:

Code: [Select]
# inxi -G
Graphics:  Device-1: Intel 4th Gen Core Processor Integrated Graphics driver: i915 v: kernel
           Device-2: NVIDIA GK208M [GeForce GT 730M] driver: nouveau v: kernel
           Device-3: Acer Integrated Camera type: USB driver: uvcvideo
           Display: x11 server: X.Org 1.20.8 driver: intel resolution: 1: 1920x1080~60Hz
           2: 1920x1080~60Hz
           OpenGL: renderer: Mesa DRI Intel HD Graphics 4600 (HSW GT2) v: 4.5 Mesa 20.1.1

Code: [Select]
# inxi -v3
System:    Host: t440p Kernel: 5.6.15-towo.1-siduction-amd64 x86_64 bits: 64 compiler: gcc
           v: 10.1.0 Desktop: KDE Plasma 5.17.5
           Distro: siduction 18.3.0 Patience - kde - (202002031718)
           base: Debian GNU/Linux bullseye/sid
Machine:   Type: Laptop System: LENOVO product: 20AWS2QV00 v: ThinkPad T440p serial: PC0AFBQN
           Mobo: LENOVO model: 20AWS2QV00 v: SDK0E50510 WIN serial: L1HF5AM00X9
           UEFI [Legacy]: LENOVO v: GLETA0WW (2.54 ) date: 08/27/2019
Battery:   ID-1: BAT0 charge: 93.6 Wh condition: 94.6/99.5 Wh (95%) model: SANYO 45N1779
           status: Unknown
CPU:       Topology: Dual Core model: Intel Core i7-4600M bits: 64 type: MT MCP arch: Haswell
           rev: 3 L2 cache: 4096 KiB
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 23146
           Speed: 3007 MHz min/max: 800/3600 MHz Core speeds (MHz): 1: 3007 2: 3085 3: 2974
           4: 2925
Graphics:  Device-1: Intel 4th Gen Core Processor Integrated Graphics vendor: Lenovo driver: i915
           v: kernel bus ID: 00:02.0
           Device-2: NVIDIA GK208M [GeForce GT 730M] vendor: Lenovo driver: nouveau v: kernel
           bus ID: 02:00.0
           Device-3: Acer Integrated Camera type: USB driver: uvcvideo bus ID: 1-12:5
           Display: x11 server: X.Org 1.20.8 driver: intel resolution: 1: 1920x1080~60Hz
           2: 1920x1080~60Hz
           OpenGL: renderer: Mesa DRI Intel HD Graphics 4600 (HSW GT2) v: 4.5 Mesa 20.1.1
           direct render: Yes
Network:   Device-1: Intel Ethernet I217-LM vendor: Lenovo ThinkPad T440p driver: e1000e
           v: 3.2.6-k port: 4080 bus ID: 00:19.0
           IF: enp0s25 state: down mac: 50:7b:9d:54:62:c8
           Device-2: Intel Wireless 7260 driver: iwlwifi v: kernel port: 3000 bus ID: 04:00.0
           IF: wlp4s0 state: up mac: 4c:eb:42:ab:b2:1a
Drives:    Local Storage: total: 465.76 GiB used: 53.74 GiB (11.5%)
Info:      Processes: 325 Uptime: 19d 12h 02m Memory: 15.40 GiB used: 6.00 GiB (39.0%)
           Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.16 inxi: 3.1.03

Code: [Select]
# cat /etc/X11/xorg.conf.d/20-intel.conf
# /etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
  Identifier  "IntelGraphics"
  Driver      "intel"
  #Option      "AccelMethod" "uxa"
  #Option      "AccelMethod" "sna"
  Option      "DRI" "3"
  #Option      "TripleBuffer" "true"
  Option      "TearFree"     "true"
  #Option      "DRI"          "false"
EndSection
# end of 20-intel.conf


Any ideas?
« Last Edit: 2020/06/26, 04:10:32 by finotti »

Online towo

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Re: Screen Freezes
« Reply #1 on: 2020/06/26, 07:26:46 »
Try booting with
Code: [Select]
intel_iommu=igpu_offas bootparameter.

And btw, why you don't use the recent kernel?
Ich gehe nicht zum Karneval, ich verleihe nur manchmal mein Gesicht.

Offline hendrikL

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  • Posts: 416
Re: Screen Freezes
« Reply #2 on: 2020/06/26, 07:29:48 »
mh, why using the intel-driver not modesetting from the kernel?

What you can try, add to the boot-parameters "intel_iommu=igfx_off"


Also, if you don't need the 20-intel.conf, rename it!

Code: [Select]
mv 20-intel.conf 20-intel.conf~
ps. try first what towo wrote ;)

Offline finotti

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  • Posts: 143
Re: Screen Freezes
« Reply #3 on: 2020/06/26, 14:37:54 »
Thanks, towo and HendrikL.  The boot parameter seems to have fixed it!
Out of curiosity, what does it really do?


And btw, why you don't use the recent kernel?


My wife uses this, so I don't have access to often to update it.  But now it is up to date:


Code: [Select]
# uname -a
Linux t440p 5.7.6-towo.1-siduction-amd64 #1 SMP PREEMPT siduction 5.7-9 (2020-06-24) x86_64 GNU/Linux


mh, why using the intel-driver not modesetting from the kernel?


I assumed that the intel driver would be better?  I think I was using modesetting before and can't quite remember if I changed it because I had a problem or just because I thought intel would work better.