GPU HANG: any quick (temporal) fix?

[riveravaldez <riveravaldezmail@gmail.com>]

Hi, I'm having what seems to be GPU hangs (they occurred consistently
using both Openbox and IceWM, with both Firefox and Epiphany, and
always when playing video, both with videocall or YT videos), screen
gets mostly frozen (but all system and software keeps responding
normally to the keyboard), Openbox eventually terminate itself and
with IceWM I can do Ctrl+Alt+F1 and `killall -s SIGINT icewm` which
produces the same result: get me back to the display manager
logging-in screen.
I'll put the info I have until now below, but the urgent ask for help
refers to the situation that I should use this laptop to work with
videocall tomorrow, so: is there any way to avoid this hangs in a
quick/temporal fashion? (Maybe installing a previous kernel, using
another driver, ..., I don't know.)
Any help would be obviously greatly appreciated.

The laptop is a ThinkPad X220 Tablet with up-to-date Debian testing.

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation
Core Processor Family Integrated Graphics Controller (rev 09)

$ sudo lshw
debian
    description: Notebook
    product: 4298A26
    vendor: LENOVO
    version: ThinkPad X220 Tablet
    serial: R9P31TD
    width: 64 bits
    capabilities: smbios-2.6 dmi-2.6 smp vsyscall32
    configuration: administrator_password=disabled chassis=notebook
family=ThinkPad X220 Tablet power-on_password=disabled
uuid=8125C6A9-E843-CB11-8E90-B848DEED99EE
  *-core
       description: Motherboard
       product: 4298A26
       vendor: LENOVO
       physical id: 0
       version: Not Available
       serial: 1ZMDP45NFS3
       slot: Not Available
     *-cpu
          description: CPU
          product: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz
          vendor: Intel Corp.
          physical id: 1
          bus info: cpu@0
          version: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz
          serial: Not Supported by CPU
          slot: CPU
          size: 3130MHz
          capacity: 3200MHz
          width: 64 bits
          clock: 100MHz
          capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae
mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr
sse sse2 ht tm pbe syscall nx rdtscp x86-64 constant_tsc arch_perfmon
pebs bts nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq
dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1
sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm epb pti
tpr_shadow vnmi flexpriority ept vpid xsaveopt dtherm ida arat pln pts
cpufreq
          configuration: cores=2 enabledcores=2 threads=4
(...)
        *-display
             description: VGA compatible controller
             product: 2nd Generation Core Processor Family Integrated
Graphics Controller
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 09
             width: 64 bits
             clock: 33MHz
             capabilities: msi pm vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:31 memory:f0000000-f03fffff
memory:e0000000-efffffff ioport:5000(size=64) memory:c0000-dffff

$ sudo dmesg
(...)
[ 4876.455499] i915 0000:00:02.0: [drm] GPU HANG: ecode 6:1:85fffffc,
in eadedCompositor [4198]
[ 4876.455500] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 4876.455501] Please file a _new_ bug report at
https://gitlab.freedesktop.org/drm/intel/issues/new.
[ 4876.455501] Please see
https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs
for details.
[ 4876.455501] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 4876.455502] The GPU crash dump is required to analyze GPU hangs, so
please always attach it.
[ 4876.455502] GPU crash dump saved to /sys/class/drm/card0/error
[ 4876.455566] i915 0000:00:02.0: [drm] Resetting chip for stopped
heartbeat on rcs0
[ 4876.557634] i915 0000:00:02.0: [drm] eadedCompositor[4198] context
reset due to GPU hang
[ 4922.280610] i915 0000:00:02.0: [drm] GPU HANG: ecode 6:1:95efffbc,
in Xorg [3468]
[ 4922.281135] i915 0000:00:02.0: [drm] Resetting chip for stopped
heartbeat on rcs0
[ 4922.383202] i915 0000:00:02.0: [drm] Xorg[3468] context reset due to GPU hang
[ 4937.384390] i915 0000:00:02.0: [drm] GPU HANG: ecode 6:1:94feffbc,
in Xorg [3468]
[ 4937.384461] i915 0000:00:02.0: [drm] Resetting chip for stopped
heartbeat on rcs0
[ 4937.486866] i915 0000:00:02.0: [drm] Xorg[3468] context reset due to GPU hang
[ 4958.375912] i915 0000:00:02.0: [drm] GPU HANG: ecode 6:1:84eeffbc,
in Xorg [3468]
[ 4958.375983] i915 0000:00:02.0: [drm] Resetting chip for stopped
heartbeat on rcs0
[ 4958.478410] i915 0000:00:02.0: [drm] Xorg[3468] context reset due to GPU hang

I will follow those instructions (bug-filling) ASAP, but meanwhile I
need to keep working with the laptop...

Thanks a lot for any help or recommendation.

Kind regards.